Question

The concentration of a solution of sodium hydroxide (NaOH) is 0.10 mol/dm3. What is the concentration of the solution in g/dm3?​

Answer 1

Explanation:

pH of a solution is the negative logarithm of hydrogen ion concentration to the base 10. This means that pH of 1N (or 1M being same, as HCl is a monobasic acid) HCl is -log(1) =0 (HCl is a strong acid and 1N HCl in H2O is fully ionized. The pH of 0.1 N HCl is, therefore, -log( 0.1 )(to the base 10)= 1. So pH of 0.001N or 0.001 molar HCl is 3 {-log 10 to the power -3 = -3×-1 =3}

Answer 2

Please refer to the attached file

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