Answer the following questions in the space provided, showing all work. give you

Question

Answer the following questions in the space provided, showing all work. give your final answers to three significant figures. Equations: pH = -log[H^+] pOH = -log[OH^-] pH + pOH = 14 [H^+] = 10^-pH [OH^-] = 10^-pOH (10 raised to the negative pH) (10 raised to the negative pOH) If a solution has a [H^+] of 8.43 times 10^-4 M, what is the pH of the solution? If a solution has a pOH of 8.56, what is the [H^+] of the solution? Given a solution that has a pH of 2.34, what is the [H^+] in the solution?

Explanation / Answer

Given

1)

[H+] = 8.43 * 10-4 M

pH = -log ([H+]) = - log (8.43 * 10-4 ) = 3.07 Answer

2)

Given pOH = 8.56

pH = 14 - pOH = 14 -8.56 = 5.44

- log([H+]) = 5.44

[H+] = 3.6 * 10-6 Answer

3)

Given

pH = 2.34

- log([H+]) = 2.34

[H+] = 4.57 * 10-3 Answer

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