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3 years ago

A solution has a22.0*10^-6 H30^+ Calculate the OH^- and pH of this solution, be sure to show work.

Chemistry

1 answer:

mrs_skeptik [129]3 years ago

6 0

Answer:

pH= 4.66

OH^- = 4.55*10^-10

Explanation:

So H3O^+ means the same thing as [H^+].

so pH= -log(22.0*10^-6)

pH= 4.66

To find [OH^-]

[H^+] [OH^-] = 1*10^-14

1*10^-14 / 22.0*10^-6 = 4.55*10^-10= OH^-

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3 years ago

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2 years ago

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3 years ago

Which of the following would have the largest pKa?

garri49 [273]

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CH3CH2NH3+/CH3CH2NH2 would have the largest pKa

Explanation:

To answer this question we must know Kb of CH3CH2NH2 is 5.6x10⁻⁴, and for C6H5NH2 is 4.0x10⁻¹⁰. And the CH3CH2NH3+ and C6H5NH3+ are related with these substances because are their conjugate base. That means:

pKa of CH3CH2NH3+ = CH3CH2NH2; C6H5NH3+ = C6H5NH2

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