What happens when ammonia gas is bubbled through copper sulphate solution till excess?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Answer explain why it is not possible to deduce a complete order of reactivity.

Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)