Calculate the pH of a solution prepared by dissolving 0.270 mol ...

[NClaborn]

Calculate the pH of a solution prepared by dissolving 0.270 mol of formic acid (HCO2H) and 0.260 mol of sodium formate (NaCO2H) in water sufficient to yield 1.00 L of solution. The Ka of formic acid is 1.77  10-4.
 
  A) 2.099
  B) 10.264
  C) 3.736
  D) 2.307
  E) 3.952

Question 2

In which of the following atoms is the 3s orbital closest to the nucleus?
 
  A) S
  B) Po
  C) Te
  D) Se
  E) P

[catron30]

Answer to Question 1

C

Answer to Question 2

B

[NClaborn]

Thanks for the timely response, appreciate it

[scikid]

TYSM