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Question
The pH of a solution of a strong base is 10.27 at 25ºC. What is its hydronium-ion concentration?
A) 2.9 x 10-3 M
B) 1.9 x 10-4 M
C) 1.4 x 10-4M
D) 5.4 x 10-11 M
E) 1.4 x 10-2M
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