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Question
What is the pH of a buffer made by combining 175 mL of 0.33 M NaC2H3O2with 126 mL of 0.48 M HC2H3O2? The Ka of acetic acid is 1.75 x10-5.A) 4.74
B) 4.78
C) 5.79
D) 4.69
E) 5.24
Answer
This answer is hidden. It contains 1 characters.
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Q:
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Q:
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Q:
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Q:
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Q:
For a certain first-order reaction with the general form aA → products, the rate is 0.32 M·s-1 when the concentration of the reactant is 0.29M. What is the rate constant for this reaction?A) 0.26 s-1B) 1.1 s-1C) 0.32 s-1D) 3.1 s-1E) 3.8 s-1