# All Questions

28,891 questions
5 views

### Reduction of Alkyl halide into alkane

Can we reduced alkyl halide by using Al/Na with base into alkane? RX +Na with NaOH ------------------ RH
8 views

### Ranking basicity from a structure

I just came across this question in my revision. I selected (A) but the correct answer is (D). Could someone explain where I am going wrong? I is least stable --> most reactive --> most basic Cl is ...
8 views

### Electrochemical series Question

Will non-standard conditions (such as 0.25M solutions) change the actual ranking of species in the ECS? Thanks
8 views

### Molecule with highest no. of different atoms

What's the largest molecule containing highest no. of different elements (atom of each elementoccur not more than once) . The molecule might be unstable but must have been observed. Eg:- HCN satisfies ...
9 views

### What is the final volume

A sample containing 2.80 grams of O2 gas has an initial volume of 15.0 mL What is the final volume when 0.500 moles of O2 is added at constant temperature and pressure?
15 views

### Rate of change of reaction rate of 0th, 1st, 2nd order reaction?

Does the rate of change of the reaction rate for a 1st order reaction change linearly over time? My teacher says it does, but my textbook seems to contradict this. Could anyone clarify?
9 views

### Pure Hydrogen and Dry Hydrogen Difference

Do pure and dry hydrogen are the same? What does dry hydrogen actually means. And what does pure hydrogen means.
12 views

### Reduction by standard potential

Fe3+ is reduced to Fe2+ by using (A) H2O2 in presence of NaOH (B) Na2O2 in water (C) H2O2 in presence of H2SO4 (D) Na2O2 in presence of H2SO4 How to solve this by standard potential and not cramming?
13 views

### How can I prevent my spin-coated silica thin film from cracking when I heat it up?

I am spin-coating a porous silica solution on a glass microscope coverslip, and then heating the resulting thin film to $\pu{350 °C}$, in an attempt to create a thin film of porous silica sol gel. I ...
21 views

### Equilibrium - Pressure Vs. Concentration [on hold]

Does increasing the pressure increase the concentration of reactants as well? If: $$\ce{A(g) + B(g)<=>C(g) + D(g)}$$ Assuming all reactants and products are gases. According to Le Chatelier'...
22 views

### What is the molecular weight of Tris(ethylenediamine)cobalt(III) iodide pentahydrate?

What is the molecular weight of Tris(ethylenediamine)cobalt(III) iodide pentahydrate ? The chem formula is: (Co(en)3(I)3*5(H2O) According to my calculation, it is: 928.77 g/mol. But I am ...
9 views

### Fuel Cell Water Waste [on hold]

What is the quality of the water produced by a Proton-exchange membrane fuel cell?
17 views

### Determining the name of the gas given Liters of gas and mass of balloon? [on hold]

How would I answer this? I keep getting stuck! A red balloon holds 2.45L of gas. The following data were collected at 25°c and 760mmHg: mass of empty balloon = 3.00g, mass if balloon and gas = 3....
14 views

### Transition metals and color

Which one of the following transition metal oxides is NOT colored? a) CuO b) FeO c) TiO2 d) Mn2O3 answer is c. book explains that Ti in TiO2 has no d electrons, which otherwise can undergo energy ...
17 views

### why is methane gas solubility in water higher than carbon monoxide solubility in water?

The above graph depicts solubility in water at various temps. If we are dissolving in polar water, why is methane more soluble than a polar molecule like carbon monoxide?
18 views

### What is the major product in the given reaction?? I cannot figure out why d is the answer?please help me out [on hold]

I cannot figure out how the hell d is answer According to me b must be the answer due to +i effect.
10 views

### does nikel manganese cobalt have electron share in li-ion batteries [on hold]

does nickel manganese cobalt have an electron share to the lithium ion inter calated, in the production of 4 volt potential NMC batteries
29 views

$$r_n = \left(\frac{h^2}{4\pi^2me^2}\right)\times\frac{n^2}{Z}$$ Would I be able to calculate the radius of sodium ion ($\ce{Na+}$) with the help of the above Bohr atomic model formula?
30 views

### How does a change in the surface area of the electrodes affect the voltage produced by a galvanic cell?

I did a lab where I increased the surface area of the electrodes in a galvanic cell, that resulted in an increase in voltage. However, I have been reading and that is not supposed to happen. I am a ...
465 views

### What is the smallest molar volume? [on hold]

I wondered how small a volume a mole of material could occupy, so I started with carbon, which would need 12 grams. That's 60 carats, and there happens to be a famous 60 carat diamond. If my density/...
17 views

### Why does lithium have high reduction potential values? [on hold]

I read about this somewhere that low wellies a reduction potential means it’s more reducing nature. Since it’s known that lithium is a strong reducing agent how can with him have high reduction ...
21 views

### Linear Equation for an Overall Third-Order Reversible Reaction

For the reaction: aA <--> bB With reaction order (m) with respect to substance A; m = 2 (forward reaction) and reaction order (n) with respect to substance B; n = 1 (backwards ...
11 views

### FUNCTIONALIZATION WITH FERULIC ACID [on hold]

I am going to fuctionalize my two different surfaces with ferulic acid. One of the surfaces has OH groups and another surface has COOH groups. Can Ferulic acid covalently attache to these surfaces?
39 views

### Unusual oxidation states of alkali metals

When going through list of oxidation states on Wikipedia I encounterd there that sodium, potassium, rubidium and caesium exhibit oxidation states of -1, but not lithium, even though its ...
15 views

### Universal Gas Equation + Stoichiometry [on hold]

Could someone please solve the following questions for me? Use the universal gas equation to calculate the volume of the greenhouse gas, $\ce{CO2}$ (measured at $\pu{25°C}$ and $\pu{101.3 kPa}$), ...
11 views

### Can i apply resin & hardner on cement toy? [on hold]

This is ganesh from india, as i need to make an water fountains of height 4 feet in which i made with thermocol (i.e) styrofoam and i carved to fountain shape and i initially coated with white cement ...
17 views

### Are iodoalkanes non polar given that the electronegativity difference between carbon and iodine is negligible?

According to my understanding, the electronegativity difference between two compounds must be somewhere between 0.4 and 2 to be considered polar, greater than 2 to be ionic and lesser than 0.4 to be ...
36 views

### Electrosynthesis of HCl?

I was attempting to synthesize hydrochloric acid and it seems to have formed another form of chlorinated acid. The smell is more of chlorine and is extremely powerful. I got some on my jeans and it ...