Questions tagged [aqueous-solution]

For questions relating to compounds dissolved in water and resulting reactions.

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3answers
321 views

An aqueous solution of NaCl has a mole fraction of 0.21. What is the mass of NaCl dissolved in 100.0 mL of solution? [closed]

Work mole fraction of NaCl = 0.21/0.21+0.79 If there is 1 mol of total solution, there will be 0.21 mol NaCl and 0.79 mol H2O 0.21 mol NaCl = 12.27 g 0.79 mol H2O = 14.23 g this would yield a ...
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2answers
3k views

How to tell the pH of HC2H3O2?

Find the $\mathrm{pH}$ of a $\pu{0.500 M}$ solution of $\ce{KC2H3O2}$. I am preparing for an exam on equilibrium and I have two questions: How would I go about calculating this? Is the $\ce{H3O}$ in ...
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2answers
792 views

Difference between some terms relating to liquids

So my chemistry teacher, when she talks about liquid substances she talks about them in reference to 3 words. She refers to liquid substance with one of these 3 words- 1)Aquesous form 2)Solution ...
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2answers
3k views

If NaCl dissociates when in water, why don't we see Chlorine gas escaping?

I've always been a little confused about the whole process of ions dissociating in solutions. When salt dissolves and splits into Na+ and Cl-, shouldn't the Cl- ion still be gaseous? And shouldn't we ...
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1answer
53 views

How do I get a 20% ratio of sodium bisulfate with 1 gallon water? [closed]

How many lbs do I add to 1 gallon of water to get a 20% sodium bisulfate ratio? I am in the middle of anodizing some aluminum.... I just threw the whole 3 lbs in... hopefully it works... I ended up ...
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1answer
62 views

Do bases undergo dissociation or ionisation in aqueous solution?

What do bases undergo when dissolved in water: ionisation or dissociation or both? Some books say ionisation while others say dissociation. What is the correct answer?
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1answer
46 views

Peroxide without hydrogen [closed]

How come we always see hydrogen peroxide and never peroxide by itself. Is there such a thing as peroxide ? Does this exist in nature? Why is hydrogen always associated with it? Please note: First ...
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1answer
1k views

Calculating pH of solution of phosphoric acid and ammonia

What is the $\ce{pH}$ of the solution created when $\ce{50ml}$ of $\ce{0.2M}$ $\ce{H3PO4}$ is mixed with $\ce{50ml}$ of $\ce{0.4M}$ $\ce{NH3}$? This problem can be approached rigorously. That's what ...
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1answer
396 views

Is it possible to synthesize magnesium nitrate through an aqueous solution of ammonuim nitrate and magnesium sulfate?

Is it possible to synthesize magnesium nitrate through an aqueous solution of ammonium nitrate and magnesium sulfate? I am attempting to determine whether the sulfate or nitrate radical has a higher ...
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1answer
3k views

How do you write the ionization equation for calcium hydroxide?

This is a base that would ionize completely, and the dissociation equation would look like this: $$\ce{Ca(OH)2 <--> Ca^2+ + 2OH-}$$ but how would I write the Brønsted equation with water? $$\ce{...
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1answer
973 views

If Ag2SO4 dissociates into 2Ag+ and SO4^2-, Why doesn't SO4^2- dissociate into oxygen and sulphur? [duplicate]

When $\ce{Ag2SO4}$ dissociates it becomes $\ce{2Ag^+}$ and $\ce{SO4^2-}$ Why doesn't the $\ce{SO4^2-}$ dissociate further into oxygen and sulfur?
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2answers
75 views

What do we call ions without basic and acidic properties

According to Brønsted theory, Acids are substances (molecules and ions) donating $\ce{H+}$ Bases are substances (molecules and ions) receiving $\ce{H+}$ I've been trying to find a complete Brønsted-...
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1answer
173 views

Molarity of silver(I) nitrate solution after the reaction with magnesium [closed]

$\pu{3 g}$ of $\ce{Mg}$ are placed in $\pu{500 mL}$ of $\pu{0.625 M}$ $\ce{AgNO3}$. When the reaction is complete, what is the molarity of the $\ce{AgNO3}$ solution? I'm thinking you need to use $...
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2answers
728 views

Converting mass percentage of a solution into its density? [closed]

Is there a way of converting mass percentage of a solution to obtain its density? (With mass percentage been given and the compounds which are mixed to form the binary solution)
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1answer
10k views

What is the solution and the solvent in 80% solution of ethanol in water?

I was wondering whether the solvent is water or ethanol, I think it must be ethanol because it is present in larger quantity; however, on the other hand water is the universal solvent so shouldn't it ...
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1answer
431 views

What's the role of sodium carbonate and hydrochloric acid for the neutralization of disaccharides into monosaccharides?

A couple of days ago we conducted the following experiment at school: Add 5mL of an aqueous solution of sucrose ($\ce{C6H22O11}$) to 1mL of concentrated hydrochloric acid and heat it for 10 minutes....
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1answer
119 views

Find the concentration of proton after adding a acid to NaOH [closed]

I have this simple problem that I cannot figure out though, only the first part. 100 ml of 1.0 $\frac{mol}{L}$ $NaOH_(aq)$ contains ( a ) g of NaOH. After mixing 100 ml of 1.0 $\frac{mol}{L}$ $...
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2answers
271 views

Are aqueous solutions of oxidizing agents safe? [closed]

In the "reducing agent" article in Wikipedia it says Good reducing agents are reagents that deliver $\ce{H2}$. Wouldn't that make water unsafe to dissolve oxidizing agents?
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1answer
702 views

What are the products of the double displacement reaction of oxalic acid and cesium hydroxide?

A solution of oxalic acid is mixed with a solution of cesium hydroxide. This chemical reaction requires double displacement. I got this as my chemical equation: $$\ce{C2H2O4 + CsOH -> H3O + CsC2O4}...
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2answers
282 views

How does a glow stick work [duplicate]

I understand that when the glow sticks snaps, it produces light, and that process is called triboluminescence. But I don't understand how that works
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1answer
43 views

double replacement [closed]

$$\ce{KNO3(aq) + BaCl2(aq) -> KCl(aq) + Ba(NO3)2(aq)}$$ I found products but I noticed in product that both of them are in the aqueous phase. So actually no reaction occurs? Does a reaction need ...
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1answer
58 views

How does sodium carbonate reduce pH?

Sodium carbonate is used in pools to raise pH. From my understanding, it would dissociate in water like so: $$\ce{Na2CO3 <=> 2 Na+ + CO3^2-}$$ To raise pH, doesn't it have to absorb hydrogen ...
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1answer
786 views

How is the dichromate anion generated from potassium dichromate? [closed]

How does $\ce{K2Cr2O7}$ become $\ce{Cr2O7^2-}$ when dissolved in water?
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2answers
1k views

Why does acetic acid (CH3COOH) conduct electricity the worst in comparison to HBr, HCOONa and NaNO3 [closed]

Which of the given substances (in an aqueous solution) conducts electricity the worst: $\ce{CH3COOH}$, $\ce{HBr}$, $\ce{HCOONa}$ and $\ce{NaNO3}$? I've found this assingment included in the 2017 ...
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0answers
48 views

Where are the hydroxyl ions going?

We write $$[\ce{H^+}]\cdot [\ce{OH^-}] = 10^{-14}$$ in aqueous solution. When I add acid, the $[\ce{H^+}]$ will go up then $[\ce{OH^-}]$ will decrease to maintain the constant product, but where ...
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1answer
525 views

What are the dangers associated with a copper sulfate CuSO4 + Water H2O solution aprox 5 gallons at room temperature in a room with no ventilation.

Will there be hazardous gases in the room? is the evaporation of this solution harmful in any way to animals or humans?
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0answers
1k views

Which of the following would be a strong electrolyte in solution? [closed]

Which of the following would be a strong electrolyte in solution? KCL Al(OH)3 PbI2
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1answer
81 views

Is Phosphate (PO4 3-) solube in water? [closed]

Josh~ Superphosphate is used instead of just phosphate because superphosphate is a compound whereas phosphate is an ion. This means that phosphate must attach itself with a cation in order to give a ...