Question

Which of the following solution has the lowest $pH$ value?

• A. 0.1 M $NaCl$
• B. 0.01 M $NaHC{O}_3$
• C. 0.001 M $N{a}_{2}C{O}_3$
• D. 0.01 M $NaOH$

Answer 1

The correct option is A 0.1 M $NaCl$

Option $A$ is correct as $NaCl$ is neutral whereas all other solutions are basic and thus have $pH$ greater than $7$.