What Is the PH of a Buffer That Consists of 0.20

question 88

Multiple Choice

What is the pH of a buffer that consists of 0.20 M NaH₂PO₄ and 0.40 M Na₂HPO₄?
K_a = 6.2 $\times$ 10^-8

• A)6.51
• B)6.91
• C)7.51
• D)7.90
• E)8.13

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Definitions:

Influenced

Refers to being affected or altered by an external factor or variable.

Sample Regression Line

This is the line obtained from the regression analysis of sample data, used to predict the dependent variable values from the independent variable.

Dependent Variable

A variable in an experiment or model that is expected to change in response to changes in the independent variable.

Independent Variables

Variables in an experiment or model that are manipulated or varied by the researcher to determine their effect on the dependent variable.