Physical Chemistry 2: Acids, Bases and Buffers Multiple Choice Questions

1. Which of the following mixtures would act as a buffer?

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2. What happens to the Kw and pH of pure water when it is heated?

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3. Which of the following acids has the lowest pH?

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4. At 30℃ the pH of pure water is 6.92. What is the Kw of pure water at this temperature?

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5. Which of the following statements is NOT correct?

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6. 0.300 moles of an acid HX dissociated to give 0.00450 moles of H+.

What is the % dissociation of the acid?

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7. What is the pH of a solution of H2SO4 with a concentration of 0.200 mol dm-3?

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8. What is the pH of the solution that is formed when 90 cm3 of distilled water is added to 10cm3 of 0.5 mol dm-3 HCl?

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9. Which of the following compounds is NOT a Bronsted-Lowry acid?

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10. In a titration with NaOH the half-neutralisation point of a weak acid was found to be 3.86. What is the Ka of the acid?

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