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AP Chemistry Exam Prep

Category - AP Chemistry

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How many liters of .50 M HBr are required to neutralize 350 mL of 2M KOH?

.088 liters
8.8 liters
2.8 liters
4.6 liters
1.4 liters

Explanation

Answer: 1.4 liters

HBr is a strong, monoprotic acid while KOH is a strong base that releases one hydroxide ion per molecule. The concentrations and volumes of these solutions are related by the formula (Molarity₁)(Volume₁) = (Molarity₂)(Volume₂). Plugging in the variables indicates that 1.4 liters of HBr are required to neutralize the KOH.

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