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Salt of Weak Acid and Strong Base

Predict if th...

Question

Predict if the solutions of the following salts are neutral, acidic or basic:
$N a C l, K B r, N a C N, N H_{4} N O_{3}, N a N O_{2}$ and KF

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Solution

(i) NaCl:
$\begin{matrix} N a C l & + & H_{2} O & \leftrightarrow & N a O H & + & H C l S t r o n g b a s e & S t r o n g a c i d \end{matrix}$
Therefore, it is a neutral solution.
(ii) KBr:
$\begin{matrix} K B r & + & H_{2} O & \leftrightarrow & K O H & + & H B r S t r o n g b a s e & S t r o n g a c i d \end{matrix}$
Therefore, it is a neutral solution.
(iii) NaCN:
$\begin{matrix} N a C N & + & H_{2} O & \leftrightarrow & H C N & + & N a O H W e a k a c i d & S t r o n g a c i d \end{matrix}$
Therefore, it is a basic solution.
(iv) $N H_{4} N O_{3}$
$\begin{matrix} N H_{4} N O_{3} & + & H_{2} O & \leftrightarrow & N H_{4} O H & + & H N O_{3} W e a k b a s e & S t r o n g a c i d \end{matrix}$
Therefore, it is an acidic solution.
(v) $N a N O_{2}$
$\begin{matrix} N a N O_{2} & + & H_{2} O & \leftrightarrow & N a O H & + & H N O_{2} S t r o n g b a s e & W e a k a c i d \end{matrix}$
Therefore, it is a basic solution.
(vi) KF
$\begin{matrix} K F & + & H_{2} O & \leftrightarrow & K O H & + & H F S t r o n g b a s e & W e a k a c i d \end{matrix}$
Therefore, it is a basic solution.

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Salt of Weak Acid and Strong Base

Standard XII Chemistry

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Predict if the solutions of the following salts are neutral, acidic or basic: NaCl,KBr,NaCN,NH4NO3,NaNO2 and KF

Predict if the solutions of the following salts are neutral, acidic or basic:
$N a C l, K B r, N a C N, N H_{4} N O_{3}, N a N O_{2}$ and KF