1. Liquid Plumber, a drain cleaner, has a pH of 14.32. What is the pOH of this s
ID: 934335 • Letter: 1
Question
1. Liquid Plumber, a drain cleaner, has a pH of 14.32. What is the pOH of this solution and what is the hydroxide ion concentration?answer pOH -0.33 [OH^+]2.1M
2. A solution is made with [Pb2+] = 2.5x10-3 M and [I-] = 4.0x10-3M. What is the reaction quotient, Q, for the dissolution of PbI2(s) in water? Do you expect PbI2(s) to precipitate? Ksp(PbI2) = 6.5x10-4
answer) Q=4.0X10^-8 precipitate:no
3.The pKa for the ammonium ion (NH4+) in water is 9.3. What is the pH of a 100mL solution that contains 0.20M ammonium ion and 0.10M ammonia?
NH4+(aq) + H2O(l) ? H3O+(aq) + NH3(aq)
Answer:9.0
i just need explanations.. answer provided
Explanation / Answer
1. pH = 14.32
pOH = 14 - pH
= 14 - 14.32
pOH = - 0.32
pOH = - log[OH-]
- log[OH-] = - 0.32
[OH-] = 100.32
[OH-] = 2.089 M
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