Calculate the PH of a Solution Made by a Mixture

question 54

Multiple Choice

Calculate the pH of a solution made by a mixture of the following acids: 0.40 M HC₂H₃O₂ (K_a = 1.8  10^-5) , 0.10 M HOCl (K_a = 3.5  10^-8) , and 0.20 M HCN (K_a = 6.2  10^-10) .

• A) 2.57
• B) 3.92
• C) 4.95
• D) 4.23
• E) 3.49

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Definitions:

Return On Investment

A measure used to evaluate the efficiency of an investment, calculated as net profit divided by the cost of the investment.

Capital Turnover

A ratio that shows how efficiently a company uses its capital assets to generate sales revenue.

Invested Capital

The total amount of money that has been deployed in a company, including both debt and equity financing.

Return On Investment

A financial metric used to evaluate the efficiency or profitability of an investment, expressed as a ratio or percentage of the investment's net profit relative to its cost.