# All Questions

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8 views

I work in a lab where I use methylammonium lead triiodide dissolved in DMSO and GBL. I know DMSO penetrates skin easily, and obviously lead is toxic. Today I accidentally splashed some on my arm, and ...
4 views

### Procedure to buffer 1L with pH=6 from 21.2g of sodium carbonate?

I need the procedure to buffer 1L with pH=6 from 21.2g of sodium carbonate. Are available solutions of NaOH and HCl 2,0mol/L. Also, what would be the concentrations of H2CO3, HCO3 and CO3 in that ...
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### If you wanted to increase the pH of a weak acid by 1, how many times should you need to dilute it?

For strong acids, I know it's 10 times, but not sure how to quantify it for weak acids.
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### Why does the pH of the endpoint decrease when temperature of the titration is increased?

I was doing an experiment in chemistry class involving titrations. I would heat up different samples of vinegar and titrate them using NaOH. The trend that I found was how has temperature increase, ...
6 views

### Compressibility Factor and Generalized Compressibility Chart

From my understanding, the compressibility factor is defined by $$Z=\frac{pv}{RT}=\frac{p\bar{v}}{\bar{R}T}$$ It can also be defined by the ratio of the real molar volume of a gas to the ideal molar ...
6 views

### organic chemistry- iupac naming

How do you write tertbutyl in iupac naming? I know for iupac naming, I would need to write the substituents in alphabetic order, but would tertbutyl be considered t or b?
12 views

### Band structure of transition elements

Is the band structure of d block elements the same with the band structure of metals(half filled valence band and 0 band gap)?
11 views

### How to make the Sulphate in Calcium Sulphate available for ion exchange

I need to find a treatment for Gypsum that allows me to run it (diluted) through an ion exchange resin that will select out the sulphate and leave me the calcium. Please advice
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### How to do pressure affect homolysis?

I would like to know if high pressure is good for homolysis. Acording to chemical balance rules, if you making two substances from one (decomposition) (you have one mole of substance, and after the ...
15 views

### With electrolysis turning water into hydrogen and oxygen will we eventually use up all the water?

I hope no one thinks this is a stupid question. I’ve often wondered when we split the water molecule into hydrogen and oxygen and we use hydrogen or oxygen as a fuel for or other uses. If I understand ...
23 views

### Solid state chemistry for d block elements

Many years ago I learned in high school that atoms don't want to 'share' their 3d electrons.Now that I am learning solid state chemistry I have read that the d atomic orbitals don't overlap with ...
16 views

### How do I set up the solution to this Dalton's Law problem?

I am doing a Dalton's Law assignment in my chemistry class right now and I am being asked to find the pressure of argon in this question but I am not sure how to go about doing it. Can someone explain ...
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### Could you help me solve this problem? [closed]

In the following cell Pt,H2 p=?|HClO4(aq) 1.5 x 10-4 M || Cr3+(aq) 1 M, Cr2+(aq) 0.05 M |Pt, knowing that E0 Cr3+/Cr2+ = -0.401 V, calculate the partial pressure of hydrogen for which the ...
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### How does an electron identify whether to absorb a photon of a certain wavelength or not in absorption spectrum?

How would an electron identify the specific photons of a certain wavelength which are to be absorbed in a Hydrogen atom while creating an absorption spectrum? Well, I was thinking of it like this- Way-...
12 views

### Is the elemental state of an atom, the same as ground state?

I am just now learning about oxidation numbers, in my chemistry class. My teacher used the term, the Oxidation state of the element in the free or elemental state is always zero. I am confused as to ...
28 views

### Explain the mechanism of glycerol solubility in ether.?

I need some guidance regarding the issue of solubility, as you can see in my question i have glycerol and ether. What factors play a role in the solubilization process between these two compounds? I ...
19 views

### How is the selective titration testing equation simplified?

When there is Mn+ and Nm+ metal ions in a solution, to perform a selective complexometric titration this condition need to be satisfied, K''MYn-4 = KMYn-4 αMn+...
14 views

### Calculate the temperature at which the above reaction can be spontaneous? If data for entropy and enthalpy for seperate constituents

Please find the attached. Its not a Homework question. Its a JEE question, I need help with for my preparation.
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98 views

### Chemical Volcano- Experiment

In a science exhibition in 2011 , I and my friend made a volcano that used vinegar and baking soda for the 'effects'. There was another group that made volcano too and they had brought their own ...