A Solution Containing 0

question 180

Multiple Choice

A solution containing 0.0010 M concentration each of Ca²⁺, Sr²⁺, Ba²⁺, and Pb²⁺ is treated with solid Na₂SO₄. Which insoluble sulfate precipitates last?

• A) CaSO₄, K _sp = 2.4×10 ^{- 5}
• B) SrSO₄, K _sp = 7.6×10 ^{- 7}
• C) BaSO₄, K _sp = 1.5×10 ^{- 9}
• D) PbSO₄, K _sp = 1.3×10 ^{- 8}
• E) impossible to determine

---

Definitions:

Profit Margin

A measure of profitability calculated as net income divided by revenues, expressed as a percentage.

Capital Intensity Ratio

A metric that measures the amount of assets required to generate one dollar of revenue; the higher the ratio, the more capital-intensive the business.

Dividend Payout Ratio

The fraction of net earnings a firm pays to its shareholders as dividends, expressed as a percentage of the company’s total net income.

Cash Dividends

Payments made by a corporation to its shareholders, representing a portion of the corporate profits.