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This quiz contains 12 questions from a mix of 1 subtopics.

What does a pH greater than 7 indicate?

acid

alkaline

neutral

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Which of the following is the relationship between pH and hydrogen ion concentration?

pH = 10[H+]

pH = log10[H+]

pH = -log10[H+]

pH = [H+]

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The pH scale measures the concentration of ions in a solution.

H+

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A pH of 1 has 10 times the concentration of H+ ions as a solution with a pH of .

2

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Which statement is true about acidic solutions?

they have a higher concentration of OH- ions than H+ ions

they have equal concentrations of H+ and OH- ions

they have a higher concentration of H+ ions than OH- ions

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To dilute a solution from a pH 1 to a pH of would require dilution by 100 times.

3

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What happens to the value of Kw as temperature increases?

it decreases

it increases

it remains constant

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What is the concentration of H+ ions of a solution of pH 3 at 298 K?

1 x 10-11 mol dm-3

1 x 10-7 mol dm-3

1 x 10-6 mol dm-3

1 x 10-3 mol dm-3

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What is the concentration of OH- ions of a solution of pH 6 at 298 K?

1 x 10-7 mol dm-3

1 x 10-4 mol dm-3

1 x 10-6 mol dm-3

1 x 10-8 mol dm-3

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What is the pH of a solution with a H+ ion concentration of 2.80 x 10-4 mol dm-3?

Give your answer to 2 decimal places. 

3.55

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What is the concentration of H+ ions in a solution with a pH of 4.75?

4.75 x 10-4 mol dm-3

1.78 x 10-5 mol dm-3

1.57 x 10-4 mol dm-3

1.20 x 10-5 mol dm-3

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What is the concentration of OH- ions in a solution with a pH of 12.7?

Kw = 1.00 x 10-14 mol2 dm-6

Give your answer to 3 significant figures.

0.0501

mol dm-3

mol dm-3

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