2 Select the correct answer.
What is the pH of a 0.0075 molar solution of ammonia (NH3)?
Given: pKb = 4.75
Ο Α.
9.89
B.
3.44
O C.
10.56
OD.
12.25

The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be: