Part D lemon Juice, 2.4 Times 10-2 M Express your answer using two significant f

Question

Part D lemon Juice, 2.4 Times 10-2 M Express your answer using two significant figures. [OH-] = M Submit My Answers Give Up Problem 8.25 Calculate the [OH-] of each aqueous solution with the following [H3O=]. Part A coffee. 1.2 Times 10-5 M Express your answer using two significant figures. [OH-] = M Part B soap, 1.2 Times 10-8 M Express your answer using two significant figures. [OH-] = M Submit My Answers Give Up part C cleanser, 5.1 Times 10-10 M Express your answer using two significant figures. [OH-] = M Submit My Answers Give Up

Explanation / Answer

Part D:

Lemon juice = 2.4 x 10^-2 M = [H+]

[H+] = 2.4 x 10^-2 M

[H+] [OH-] = Kw

[OH-] = (1 x 10^-14) / (2.4 x 10^-2) = 3.75 x 10^-12 M

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Part A:

Given, [H+] = 1.2 x 10^-5 M

[H+] [OH-] = Kw

[OH-] = (1 x 10^-14) / (1.2 x 10^-5) = 8.33 x 10^-10 M

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Part B:

Given, [H+] = 1.2 x 10^-8 M

[H+] [OH-] = Kw

[OH-] = (1 x 10^-14) / (1.2 x 10^-8) = 8.33 x 10^-7 M

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Part C:

Given, [H+] = 5.1 x 10^-10 M

[H+] [OH-] = Kw

[OH-] = (1 x 10^-14) / (5.1 x 10^-10) = 1.20 x 10^-5 M

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