ICSE Class 10 Chemistry 2023 Solved Paper

Study the following observations and name the anions present in each of the reactions.

Question : 58 of 88

Marks: +1, -0

When a crystalline solid '

{P}

' is warmed with concentrated

{\H}_2 {\SO}_4

and copper turnings a reddish brown gas is released.

Solution:

{\P}

' is copper nitrate, when it warmed with conc.

{\H}_2 {\SO}_4

and copper turnings, a reddish brown gas nitrogen dioxide is released.

{{\Cu} ( {\NO}_3) _2}↙{ (\P)}+ {\H}_2 {\SO}_4+ {\Cu} → 2 {\CuSO}_4

\;+2 {\NO}_2+2 {\H}_2 {\O}

Anion is

{\NO}_3^{-}

(Nitrate)

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