Author Question: A 31.5 mL aliquot of HNO3 (aq) of unknown concentration was titrated with 0.0134 M NaOH (aq). It ... (Read 50 times)

LaDunn · **on:** Aug 27, 2018

A 31.5 mL aliquot of HNO3 (aq) of unknown concentration was titrated with 0.0134 M NaOH (aq). It took 23.9 mL of the base to reach the endpoint of the titration. The concentration (M) of the acid was ________.

A) 0.0102
B) 0.0051
C) 0.0204
D) 0.227
E) 1.02

Question 2

How many grams of copper will be plated out by a current of 2.3 A applied for 35 minutes to a 0.50 M solution of copper (II) sulfate?

A) 1.6
B) 3.2
C) 1.8 10-2
D) 3.6 10-2
E) 0.019