Episode #125 of the Stack Overflow podcast is here. We talk Tilde Club and mechanical keyboards. Listen now

Questions tagged [inorganic-chemistry]

Inorganic compounds generally do not have C-H bonds, while organic compounds do have such bonds. The distinction between inorganic and organic chemistry, however, is far from absolute.

Filter by
Sorted by
Tagged with
0
votes
1answer
24 views

How to know which reduction and oxidation reactions occurred?

We just had a lab experiment on galvanic cells and we used 0.5 M and 1 M iron(III) nitrate solution at the anode (iron electrode) and 1 M and 0.5 M copper(II) nitrate solution at the cathode (copper ...
-2
votes
0answers
11 views

General Chemistry Unknown Substance “X” and Intermolecular bonding question [on hold]

An unknown substance, X is suspected to be a non-polar simple covalent molecule. Describe how you could confirm this by testing with two different solvents. Name the solvents chosen and give the ...
7
votes
1answer
277 views

Only d orbital electrons for spin only magnetic moment

During my chemistry lessons and self studies, I have come upon many instances where I observed that during calculations of spin only magnetic moment of transition elements only the d orbital electrons ...
1
vote
0answers
197 views

Why is fluorine a oxidising agent?

An Oxidizing agent pulls the electron cloud of the substance being oxidized towards itself, for example: $$\ce{F2 + 2 X- → 2F^- + X2}\qquad (\ce{X} = \ce{Cl}, \ce{Br}, \ce{I})$$ We also know that ...
1
vote
1answer
64 views

Why is the pH level of carbonation loss decreasing then increases afterwards?

We have done an experiment of the titration of unsealed sprite soda to find the amount of carbonic acid being loss on various duration (0 to 1 hour), due to decrease pressure. The calculation was to ...
1
vote
0answers
17 views

How to increase the conversion of a reaction between an ammonium salt and ethylenediamine?

I've been trying this reaction in my lab and there is the formation of the substituted ethylene diamine but along with that, I am obtaining some amount of RCH2N(CH3)2. The reaction is done under ...
1
vote
2answers
6k views

Why do vinegar and other acids remove rust?

I have started a project on restoring a very rusty knife. I had used vinegar to remove the rust. A question dawned on me: why does vinegar remove rust? So being the thoughtful person I am, I googled ...
-1
votes
3answers
63 views

Why is CO2 + Ca(OH)2 an acid-base reaction? [on hold]

$\ce{CO_2 + Ca(OH)_2 -> CaCO_3 + H_2O}$ I was wondering why the reaction between carbon dioxide and calcium hydroxide is considered an acid-base reaction when there are no hydrogens which are ...
1
vote
0answers
20 views

Separation of Noble Metals for scrap recovery

I am researching scrap metal recovery as a side job and am hitting a wall with the noble metals. Gold, Silver, Platinum, and Palladium seem like they're all fairly easy to recover. I just can't find a ...
1
vote
1answer
44 views

Winkler's method in the absence of iodide

I'm currently doing an IB chemistry individual investigation on the effect of adding bleach to water on the water's dissolved oxygen content. I've used Winkler's method for this and I'm just wondering ...
0
votes
0answers
12 views

Decrease in alkalinity by adding oxygen [on hold]

When preparing an experiment concerning alkalinity increase in artificial seawater (ASW, tap water brought to a salinity of 28-32 using NaCl), we noticed that the total alkalinity of this ASW was way ...
0
votes
0answers
13 views

Which has more polarizing power Al3+ or Be2+

My textbook gives the order of polarizing power of Al3+ and Be2+ Al3+ < Be2+ I want to know the exact reason behind it why the polarizing power of Al3+ is less than Be2+ .. I searched a lot but ...
1
vote
3answers
37 views

Effect of dilution on the degree of dissociation of an electrolyte

My book says that on dilution, the degree of dissociation of an electrolyte increases. Consider the reaction: $$\ce{A(aq) <=> C(aq) + D(aq)}$$ Let $\ce{A}$ be the electrolyte that splits into ...
0
votes
2answers
49 views

Why do we use [H⁺] and [OH⁻] in balancing redox reactions instead of using [H₃O⁺] and [OH⁻]? [duplicate]

For what reason is it universally agreed upon that we use $$\ce{H+ + OH-}$$ ions in balancing water on either side of the reaction, but not the $$\ce{H3O+}$$ ions?
4
votes
0answers
62 views

Mathematical relation between bond angle and fraction of s or p character

The question proposed as the best original was useful but did not clarify my doubt completely. I am asking for the relation between the bond angles and the amount of s/p character, whereas that answer/...
-2
votes
1answer
85 views

What is so special about Beryllium (Be) and Magnesium (Mg)? [on hold]

I am asking this because after studying periodic properties and trends of elements I have come to an understanding that these two elements ($\ce{Be \& Mg}$) are many of the time exception to the ...
1
vote
1answer
52 views

Why doesn't hydrazine contain a double bond between two nitrogen atoms? [on hold]

I know that the Lewis structure of hydrazine contains $\mathrm{sp^3}$ hybridized nitrogen atom but on analyzing it's structure I realized there are many bond pair and lone pair repulsions. Instead of ...
-5
votes
2answers
75 views

What is the mass of ozone present in 10.6 g of Na2CO3?

I got a question in my textbook asking for the mass of oxygen present in 10.6 grams of $\ce{Na2CO3}$. Why are they asking about the mass of oxygen? Does this refer to $\ce{O2}$? Shouldn't it be the ...
3
votes
0answers
63 views
+50

diborane fragment orbitals energy of dihydrogen

I want to ask a question about the fragment orbitals of the $\ce{B2H6}$ system, specifically when I combine the $\ce{B2H4}$ with the $\ce{H2}$ fragments. I am halfway through my inorganic chemistry ...
2
votes
0answers
46 views

What is the right color of calcium copper titanate?

I'm browsing Alibaba for calcium copper titanium oxide $\ce{CaCu3Ti4O12}$ (CCTO) and I find it variety of colors: pure brown, pale brown, reddish brown or grayish dark brown. Wikipedia does not tell ...
2
votes
2answers
96 views

Calculating partial pressure of carbon monoxide

$\ce{ZnO}$ is exposed to pure $\ce{CO}$ at $\pu{1300 K}$ and the equilibrium $$\ce{ZnO(s) + CO(g) <=> Zn(g) + CO2(g)}$$ is then established at $\pu{1 atm}$ pressure. The density of the ...
11
votes
4answers
2k views

Explanation for why nickel turns green in hydrochloric acid

My daughter has a chemistry test that I am helping her prepare for. One question is Nickel sulfate, $\ce{NiSO4(aq)}$ is a green solution. Nickel chloride, $\ce{NiCl2(aq)},$ is a yellow solution. If ...
-1
votes
0answers
22 views

lowering the pH of NaOCl solution [on hold]

Hypochlorous acid is only commercially available in the form of sodium hypochlorite. From a chemical equilibrium standpoint, As the pH of the solution decreases, some of it changes to hypochlorous ...
0
votes
1answer
72 views

Strength of OH bond

This question might seem a little general, but how can we know the strength of the OH bond of third period element hydroxides? Does it increase across the period or does it decrease?But more ...
-1
votes
0answers
14 views

Dissolution of dilute solutions of hydrogen peroxide and sodium hypochlorite [closed]

Can dilute solutions of hydrogen peroxide and sodium hypochlorite be mixed in a suitable container? If yes, to what extent?
0
votes
0answers
25 views

Inorganic foreign author books for odd electron species [duplicate]

I need a foreign author book which explains odd electron species in great detail ,(explaining dimerization , energetic) telling hybridization of central atom with one unpaired electron on it pls tell ...
0
votes
0answers
11 views

trisodium phosphate and water heat of reaction [on hold]

I would like to know the trisodium phosphate and water heat of reaction. Can trisodiumphosphate in a closed vessel cause exotherm?. I am asking this because a closed vessel having tsp caused ...
-3
votes
0answers
23 views

Inorganic foreign author books [duplicate]

I want to know the best foreign author books of following topics that cover them in full depth 1.) Chemical bonding (pls list down all books that explains every topic of bonding in great depth if ...
1
vote
1answer
86 views

Does a complex that has no overall charge still have color?

The iron complex $\ce{[Fe(H2O)6]^2+}$ is colored but I'm wondering, if a pair of chloride ion is inserted on its secondary valency to form [FeCl2(H2O)6], does the complex loose its color or not?
0
votes
2answers
329 views

Why isn't iron(III) oxide an effective catalyst for decomposing hydrogen peroxide?

I've been working on a project involving the catalyst iron(III) oxide for decomposing hydrogen peroxide. It barely seemed to produce any oxygen. This YouTube video also seems to suggest that iron(...
0
votes
1answer
30 views

Is there a connection between M1V1=M2V2 and Boyle’s Law?

Recently in Chemistry 101 we learned about $M_1V_1=M_2V_2$, where $M$ is the molarity of the two mixtures and $V$ is their respective volumes. The first thing that popped into my mind when I saw ...
-2
votes
1answer
68 views

Is neutralized and dried suphuric acid still a hazard? Is it still acidic to touch? [on hold]

I mistakenly put a sulfuric acid drain cleaner in my bathroom sink. Some of it spilled into the bathroom in my basement. I cleaned it up using baking soda, but I'm concerned if I missed any, whether ...
-2
votes
0answers
16 views

Hess’ Law question [closed]

The ionic equation for this reaction is shown. Ca(s) + 2H+(aq) → Ca2+(aq) + H2(g) ∆Ho = x kJmol–1 Construct a fully labelled Hess’ Law cycle to connect each side of this equation to the relevant gas ...
-1
votes
0answers
45 views

Why highly electropositive elements form strong bases?

I know that elements like sodium form hydroxides completely dissociate in water than magnesium hydroxide. I came to a conclusion that the nature of bonding may affect this result, that is ostensibly ...
4
votes
1answer
13k views

HCl synthesis from sulfuric acid and sodium salt

I'd like know if this is right. The reaction between $\ce{NaCl}$ and $\ce{H_2SO_4}$ should yield $\ce{HCl}$ and sodium sulfate. This is a double substitution, true? No oxidation took place here. The ...
0
votes
1answer
73 views

Equivant mass of double salt

What is the equivalent mass of double salt like dolomite? And what if the double salt is hydrated? Is a double salt taken as a single unit while equating the gram equivalent in any reaction? For ...
-2
votes
0answers
31 views

Why isn't Kw = ([H+][OH-]) / [H2O], when H2O is the reactant?

For the hypothetical reaction: $$ \ce{A <=> B + C}$$ the equilibrium constant expression is written as $$\ K= \frac{[\ce B][\ce C]}{[\ce A]} $$ So, why is $ K_\mathrm w $ written as: $$ K_\...
-1
votes
1answer
13 views

Electrophilic base / nucleophilic acid / basic electrophile / acidic nucleophile [closed]

What I was understanding is that all bases are nucleophiles and acids are electrophiles means the condition for them is same and all nucleophiles are basic and all bases are nucleophiles and same for ...
0
votes
1answer
40 views

Decomposition of Metal Nitrates

An entrance JEE Main & Advanced AIEEE 2003 exam question: Which one of the following nitrates will leave behind a metal on strong heating? A. Copper nitrate B. Manganese nitrate C. ...
6
votes
1answer
131 views

Use of cryolite and fluorspar in electrolytic reduction of pure alumina by Hall-Héroult process

Cryolite $\ce{(Na3AlF6)}$ and fluorspar $\ce{(CaF2)}$ are added to alumina to lower the temperature of the mixture from $\pu{2000 °C}$ to about $\pu{900 °C}$ and also to increase the conductance. But ...
-1
votes
0answers
20 views

Back bonding in p block elements [closed]

Why is back bonding not possible beyond period 3? As in why only between 2nd period elements and 2nd and 3rd period elements?
2
votes
1answer
15k views

How to calculate the mass of magnesium necessary to produce a certain volume of hydrogen gas?

How many grams of magnesium metal are required to produce 44.8 liters of hydrogen gas at STP according to the chemical equation shown below? (Answer: $48.6~\mathrm{g}$) $$\ce{Mg(s) + 2 HCl(aq) -> ...
-2
votes
1answer
55 views

Conditions for the reduction of dichromate by manganese(II) to chromium(III) [closed]

The unbalanced redox reaction $$\ce{Mn^2+ + Cr2O7^2- -> Mn^3+ + Cr^3+}$$ occurs in what type of condition? (a) Acidic (b) Basic (c) Neutral (d) Indeterminable
-1
votes
0answers
27 views

Ionic lattice structure of copper (II) sulfate pentahydrate

I would like to ask about the structure of the $\ce {CuSO4*5H2O}$ solid. Recently, I have learnt that the colour of $\ce {CuSO4 * H2O}$, an intermediate in the thermal decomposition of the ...
0
votes
2answers
58 views

Finding molarity of hyposulfite solution used in titration

$\pu{0.1 g}$ of $\ce{KIO3}$ is treated with excess $\ce{KI}$ solution. The liberated iodine required $\pu{44 ml}$ of $x$ molar hypo solution. Calculate the value of $x$. I have used the equivalent ...
4
votes
1answer
285 views

Calcium ion and sulfate did not form precipitate

I was in the chemistry lab earlier this week. We were doing a qualitative experiment (no concentration given for any solution). I added an unknown solution that contains $\ce{Ba^2+},$ $\ce{Ca^2+},$ ...
2
votes
1answer
37 views

Why does the displacement reaction of zinc in copper(II) sulfate solution result in dark metallic copper?

It is commonly known that when zinc metal is placed in a solution of copper(II) sulfate, a displacement reaction occurs, and elemental copper is deposited onto the decomposing zinc metal. A practical ...
0
votes
0answers
23 views

Why does ammonia have a pKa of 32.5 at −33 °C?

According to Wikipedia, ammonia has a $\mathrm{p}K_\mathrm{a}$ of $32.5$ at $\pu{-33 °C}.$ Why does it say that? Is it a typo? Isn't anything above $12$ is a very strong base? And both bases and ...
-1
votes
1answer
57 views

Question About Reversible Reactions and Batteries

So my book says that the batteries we have considered so far( Daniell cells) are low life span, because they reach equilibrium too fast. In the next paragraph, it says they are also made by ...
3
votes
1answer
111 views

How can batteries reach equilibrium if the reactions are irreversible?

My book says that the batteries we have considered so far (Daniell cells) have a low life span because they reach equilibrium too quickly. In the next paragraph, it states they are also made by ...