What Is the Hydroxide-Ion Concentration in a 0 $\times$ 10^-7 and K_a2 = 4

question 70

Multiple Choice

What is the hydroxide-ion concentration in a 0.22 M solution of Na₂CO₃? For carbonic acid,K_a1 = 4.2 $\times$ 10^-7 and K_a2 = 4.8 $\times$ 10^-11.(K_w = 1.0 $\times$ 10^-14)

• A) 6.8 \(\times\) 10^-3 M
• B) 2.0 \(\times\) 10^-4 M
• C) 7.2 \(\times\) 10^-5 M
• D) 4.2 \(\times\) 10^-9 M
• E) 3.2 \(\times\) 10^-6 M

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Definitions:

Net Operating Income

An accounting term representing the profit derived from a company's everyday, non-financial activities and excluding extraordinary items.

CVP Analysis

Short for Cost-Volume-Profit Analysis, it's a management accounting technique used to analyze how changes in costs and volume affect a company’s operating income and net income.

Sales Mix

The combination of different products or services that a company sells, significantly impacting its profitability due to differing margins on each item.

Break-Even Point

The volume of production or sales at which total revenues equal total expenses, with no profit or loss.