What Is the Percent Dissociation of HNO₂ When 0 $\times$ 10^-4

question 65

Multiple Choice

What is the percent dissociation of HNO₂ when 0.064 g of sodium nitrite is added to 120.0 mL of a 0.057 M HNO₂ solution? K_a for HNO₂ is 4.0 $\times$ 10^-4.

• A)13%
• B)0.30%
• C)5.2%
• D)0.075%
• E)8.4%

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Definitions:

T-Statistic

A type of test statistic used in hypothesis testing when the sample size is small and the population variance is unknown.

Z-Statistic

A score that expresses the number of standard deviations an element is from the mean of the population.

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