Question

The pH of lemon juice at 298 K is found to be 2.32. What is the concentration of `H_3O^+` ions in the solution?

Answer 1

we know
pH`=-log_10[H^+]`
`:.`2.32`=-log_10[H^+]`
`[H^+]=10^-2.32`=`4.78*10^-2`