Acid-Base

Stuck on Oxidation-Reduction Balancing problems!

I am stuck on this oxidation-reduction balancing problem:

HO2^- + Cr(OH)3 ---> CrO4^2- +OH- 

 

Please help! I am getting no where! 

What is electrolysis in a simple definintio please

what is electrolysis ? i have reaserched but cannot seam to find an answer that is siple or at least relitively easy to understand.

Acid base and freezing point depression

An aqueous solution contains the amino acid alanine (NH2CH(CH3)COOH). Assuming that the acid is a non-dissociating electrolyte, calculate the mass percent of the solution if it freezes at -1.26 C. Using this concentration, calculate the osmotic pressure observed by the same solution at a temperature of 30 C and a density of 1.03 g/ml

Solving pH involving acetic acid and NaOH during titration at equivalence points

100 mL of a 2M acetic acid solution is titrated with a 2M NaOH solution.

a) What is the pH of the acetic acid solution before any of the NaOH solution is added?

b) What volume of the NaOH solution is required to reach the equivalence point of the titration?

c) What is the pH at the equivalence point of the titration?

d) At the end of the titration, the total volume of the NaOH solution added is 200 mL, what is the final pH?

Solving for pH of buffers while adding HCl

A student prepares 1 L of a buffer that is 1 M in acetic acid and 1 M in sodium acetate.

a) What is the pH of this buffer?

b) The student pours 500 mL of the solution into a beaker and adds 10 mL of 1 M HCl. What is the pH of the resulting solution?

c) The student pours 100 mL of the original buffer into a beaker and adds 10 mL of 1 M HCl. What is the pH of the resulting solution?

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Stoichiometry, molarity, acid base and mind numbness

I'm having a heck of a time figuring out this problem and if anyone could help that'd be great. #18. I calculated ph to be 9.8 but don't know if it's right. And don't know where to go for the neutral part of it.

How many milliliters of HNO3 are used?

If 1.0g of aniline (C6H5-NH2) is dissolved in 0.150L  and then is titrated with a .1M sikytuib if GBI3. How many milliliters of HNO3 were used?

Stoichiometry, molarity, acid base and mind numbness

I've done a few calculations for the molarity of the naOH but I don't even know if that's where I should start. Besides I got a super small #. It's # 18

Prediction of Products for Acid Base Reaction

I need help.  My question is "Predict the products of the following acid-base reaction and predict whether the equilibrium lies to the left or to the right of the equation"

 

The reactants are as follows

O(raised to the negative 2) (aq) + liquid water

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