pH is a logarithmic scale used to indicate the hydrogen ion concentration, [H+], of a solution:

Question

Question

pH is a logarithmic scale used to indicate the hydrogen ion concentration, [H+], of a solution:

pH is a logarithmic scale used to indicate the hydrogen ion concentration, [H⁺], of a solution:

pH = -log[H⁺]

Due to the autoionization of water, in any aqueous solution, the hydrogen ion concentration and the hydroxide ion concentration, [OH^-], are related to each other by the Kw of water:

Kw = [H⁺][OH^-] = 1.00 x 10^-14

where 1.00 x 10-14 is the value at approximately 297 K. Based on this relation, the pH and pOH are also related to each other as

14.00 = pH + pOH

The temperature for each solution is carried out at approximately 297 K where Kw = 1.00 x 10^-14

Part A

0.85 g of hydrogen chloride (HCl) is dissolved in water to make 6.5 L of solution. What is the pH of the resulting hydrochloric acid solution?

Part B

0.40 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 5.5 L of solution. What is the pH of this solution?

Part C

What is the pOH of the solution in Part B?

science chemistry

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Answer 1

Answer #1

C)

pH of solution = 11.26

Use:

POH = 14 - pH

= 14 - 11.26

= 2.74

Answer: 2.74

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Answer 2

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pH is a logarithmic scale used to indicate the hydrogen ion concentration, [H+], of a solution:

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