Can you help me with these Chem questions.?

Posted on 2015-12-03 07:20:00 in Chemistry by ALIZA

Question 1:

Choose the species produced by the dissolution of sodium acetate in water.

CH3COONa + H2O(l)

A. CH3COO-(aq) + Na+(aq)

B. CH3COOH(aq) + NaOH(aq)

C. CO2(aq) + NaCH3(aq)

D. CH2CO(aq) + NaOH(aq)

Question 2:

Calculate the pH of a 1.00 L solution which is made up of 0.047 mol acetic acid and 0.033 mol sodium acetate. (Ka for acetic acid is 1.8x10-5.)

Question 3:

What is the pH of a 1.00 L solution which initially has 0.045 mol acetic acid and 0.031 mol sodium acetate once 0.006 mols of NaOH has been added. (Ka for acetic acid is 1.8x10-5. Hint: What are the new concentrations of weak acid and weak base?)

Please don't just tell me the answers, show step by step so I can understand how you came to get the answer.
Thank you

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