An analytical chemist is titrating 222.7 mL of 0.8100 M solution of formic acid (H2 CO2 ) with a 1.100 M of KOH. The pKa of formic acid is 3.74. Calculate the ph of the acid solution after the chemist has added 83.93 mL of the KOH solution to it.

calculate how many grams of ammonia can be produced from 4.21 grams of

n2 + 3h2 = 2nh3

my answer:

25.0g n2 x (1 mol/ 28.0gn2) x (2 mol nh3/ 1 mol n2) x (17.0g nh3/ 1 molnh3) = 30.36g n2

25.0g h2 x (1 mol h2/ 2.00g h2) x (2 mol nh3/ 3 mol h2) x (17.0g nh3/ 1 mol nh3) = 141.67g h2

lr = n2