Calculate the PH of a Solution Prepared by Dissolving 0

question 57

Multiple Choice

Calculate the pH of a solution prepared by dissolving 0.850 mol of NH₃ and 0.300 mol of NH₄Cl in water sufficient to yield 1.00 L of solution. The K_b of ammonia is 1.77 × 10^-5.

• A)5.204
• B)4.300
• C)9.700
• D)8.781
• E)8.796

---

Definitions:

Arrector Pili

Small muscles connected to hair follicles that, when contracted, cause hair to stand up, producing 'goosebumps'.

Goose Bumps

The raising of small bumps on the skin due to the contraction of miniature muscles at the base of hair follicles, usually in response to cold or fear.

Hair Follicles

The skin organ that produces hair, consisting of a small tubular cavity containing the root of a hair and located in the dermis of the skin.

Nervous Tissue

Tissue that contains nerve cells (neurons), which conduct impulses, and neuroglia, which support, protect, and provide nutrients to neurons.