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Salt of Strong Acid and Weak Base

The order of ...

Question

The order of pH of 0.200 M solutions of $N H_{4} N O_{3}, N a N O_{3}$ and $N a_{2} C O_{3}$ is :

A

N H_{4} N O_{3} < N a_{2} C O_{3} < N a N O_{3}

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B

N H_{4} N O_{3} < N a N O_{3} < N a_{2} C O_{3}

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C

N a_{2} C O_{3} < N a N O_{3} < N H_{4} N O_{3}

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D

N a_{2} N O_{3} < N H_{4} N O_{3} < N a_{2} C O_{3}

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Solution

The correct option is C $N H_{4} N O_{3} < N a N O_{3} < N a_{2} C O_{3}$
The order of pH of 0.200 M solutions is $N H_{4} N O_{3} < N a N O_{3} < N a_{2} C O_{3}$ .
$N H_{4} N O_{3}$ solution is acidic as it is salt of a weak base and strong acid.
$N a N O_{3}$ solution is neutral as it is salt of strong acid and strong base.
$N a_{2} C O_{3}$ solution is alkaline as it is salt of a strong base and weak acid.

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Similar questions

Q. For the reaction,

F e (N O_{3})_{3} + N a_{2} C O_{3} \to F e_{2} (C O_{3})_{3} + N a N O_{3}

Initially if 2.5 moles of

F e (N O_{3})_{2}

and 3.6 moles of

N a_{2} C O_{3}

is taken. If 6.3 moles of

N a N O_{3}

is obtained then

%

yield of given reaction will be:

6

mol of a mixture containing same number of moles of

N a N O_{3}, N H_{4} N O_{3}, L i N O_{3}, C a (N O_{3})_{2}, P b (N O_{3})_{2}

A g N O_{3}

, was heated strongly. Total number of moles of

O_{2} (g)

Q. Consider the following reaction at

1123 K

B (s) + N a_{2} C O_{3} (s) + N a N O_{3} (s) ⟶

The oxidation state of boron in the product formed is:

4 mol of a mixture containing same number of moles each of $N a N O_{3}, N H_{4} N O_{3}, L i N O_{3}, C a (N O_{3})_{2}, P b (N O_{3})_{2}, A g N O_{3}, H g_{2} (N O_{3})_{2} a n d Z n (N O_{3})_{2}$ was heated strongly. Total number of moles of $N O_{2 (g)}$ evolved is___

Q. Assertion :An aqueous solution of

N H_{4} N O_{3}

is acidic in nature. Reason:

N H_{4} N O_{3}

in aqueous solution undergoes anionic hydrolysis.

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