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15 votes
15 votes
What is the H3O of a solution with a pH of 1.90

User Evangel
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1 Answer

17 votes
17 votes

\text{Answer: 1.26 }\cdot10^(-2)molL^(-1)

Given that

pH = 1.90


\begin{gathered} pH=-log(H^+_3O) \\ pH\text{ = 1.90} \\ \text{Take the log of both sides} \\ 1.90=-log(H^+_3O) \\ 10^(-1.9)=H^+_3O \\ H^+_3O\text{ = }1.26\cdot10^(-2)molL^(-1) \end{gathered}

User Imaky
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