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A vinegar solution has a #[OH^-] = 4.2*10^-10# #M# at 25°C. What is the #[H_3O^+]# of the vinegar solution?

1 Answer

Dec 16, 2016

#[H_3O^+]=2.38xx10^-5*mol*L^-1#

Explanation:

#[HO^-]=4.2xx10^-10#; #pOH=-log_10(4.2xx10^-10)=9.38#;

#pH=14-9.38=4.62#

And thus #[H_3O^+]=10^(-4.62)=2.38xx10^-5*mol*L^-1.#

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