Assuming complete dissociation, calculate the pH of the following solution:
0·003M HCl

Solution

0.003 space space MHCl

open square brackets straight H close square brackets to the power of plus space equals space 0.003 space straight M space equals space 3 space cross times space 10 to the power of negative 3 end exponent straight M space pH space equals space minus log space open square brackets straight H to the power of plus close square brackets space equals space minus log space open square brackets 3 space cross times space 10 to the power of negative 3 end exponent close square brackets space space space space space space equals negative open square brackets log space 3 space plus space log space 10 to the power of negative 3 end exponent close square brackets space space space space space space equals space minus space open square brackets 0.4771 minus 3 close square brackets space space space space space space equals space 2.52

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