The correct order of increasing $[H_{3} O^{+}]$ in the following aqueous solution is __________.

0.01 M H_{2} S < 0.01 M H_{2} S O_{4} < 0.01 M N a C l < 0.01 M N a N O_{2}

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0.01 M N a C l < 0.01 M N a N O_{2} < 0.01 M H_{2} S < 0.01 M H_{2} S O_{4}

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0.01 M N a N O_{2} < 0.01 M N a C l < 0.01 M H_{2} S < 0.01 M H_{2} S O_{4}

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0.01 M H_{2} S < 0.01 M N a C l < 0.01 M N a N O_{2} < 0.01 M H_{2} S O_{4}

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Solution

The correct option is C $0.01 M N a N O_{2} < 0.01 M N a C l < 0.01 M H_{2} S < 0.01 M H_{2} S O_{4}$
As $H_{2} S O_{4}$ is a strong acid, it will have maximum $[H^{+}]$ . $[H_{2} S]$ is a weak acid. $N a C l$ is a salt of strong acid and $N a N O_{2}$ is a salt of weak acid.

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