Given the Following Equilibria,
PbBr₂(s) Pb²⁺(aq)+ 2 Br^-(aq) $~~~~~~~~$ $~~~~~~~~~~~~$

question 17

Multiple Choice

Given the following equilibria,
PbBr₂(s) Pb²⁺(aq) + 2 Br^-(aq) $~~~~~~~~$ $~~~~~~~~~~~~$ K₁ = 6.6 $\times$ 0 10^-6
Pb(OH) ₂(s) Pb²⁺(aq) + 2 OH^-(aq) $~~~~~~~~$ $~~~~~~~~$ K₂ = 1.4 $\times$ 10^-15
Determine the equilibrium constant,K_c,for the following reaction.
PbBr₂(s) + 2 OH^-(aq) Pb(OH) ₂(s) + 2 Br^-(aq)

• A) 9.2 \(\times\) 10^-21
• B) 2.1 \(\times\) 10^-10
• C) 6.6 \(\times\) 10^-6
• D) 4.7 \(\times\) 10⁹
• E) 1.1 \(\times\) 10²⁰

---

Definitions:

Cross-sectional Study

A research method that analyzes data from a population, or a representative subset, at a specific point in time.

Cognitive Changes

Alterations in cognitive functions such as memory, problem-solving, attention, and language abilities that may occur due to aging, brain injury, or neurological conditions.

Simultaneously

Occurring, done, or existing at the same time.

Cohort Differences

Variations in characteristics or experiences of individuals who are born in different time periods.