Calculate the hydroxide ion concentration in an aqueous solution with a pH of 9.85 at 25°C. Select one: a. 7.1 x 10^-5 M b. 4.2 x 10^-10 M c. 8.7 x 10^-10 M d. 6.5 x 10^-5 M e. 1.4 x 10^-10 M
Added by Joseph G.
Step 1
85 [H+] = 10^(-9.85) = 1.41 x 10^(-10) M Show more…
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The $\mathrm{pH}$ of a solution is 9.55 at $25^{\circ} \mathrm{C}$. What is the hydroxide-ion concentration in the solution? $\begin{array}{ll}\text { a) } 2.8 \times 10^{-10} M & \text { b) } 3.5 \times 10^{-5} M \\ \text { c) } 3.1 \times 10^{-10} M & \text { (d) } 3.2 \times 10^{-5} M \\\text { (e) } 3.8 \times 10^{-5} M & \end{array}$
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