What type of reactions are represented by the following equations?
(a) $CaO + {CO}_{2} \underset{}{\to} {CaCO}_{3}$
(b) $2 Na + 2 H_{2} O \underset{}{\to} 2 NaOH + H_{2}$
(c) $Mg + {CuSO}_{4} \underset{}{\to} {MgSO}_{4} + Cu$
(d) ${NH}_{4} {NO}_{2} \underset{}{\to} N_{2} + 2 H_{2} O$
(e) ${CuSO}_{4} + 2 NaOH \underset{}{\to} Cu (OH)_{2} {Na}_{2} {SO}_{4}$

Open in App

Solution

(a) Combination reaction

(b) Displacement reaction

(c) Displacement reaction

(d) Decomposition reaction

(e) Double displacement reaction

Suggest Corrections

Similar questions

What type of reactions are represented by the following equations

(a) $C a O + C O_{2} ⟶ C a C O_{3}$

(b) $2 N a + 2 H_{2} O ⟶ 2 N a O H + H_{2}$

(d) $N H_{4} N O_{2} ⟶ N_{2} + 2 H_{2} O$

(e) $C u S O_{4} + 2 N a O H ⟶ C u (O H)_{2} + N a_{2} S O_{4}$

2 N a + 2 H_{2} O \to 2 N a O H + H_{2}

2 N a O H + C l_{2} \to N a C l + N a O C l + H_{2} O

4 O H^{-} \to O_{2} + 2 H_{2} O + 4 e^{-}

2 C l^{-} \to C l_{2} + 2 e^{-}

N a O H

100 %

I

2 N a + 2 H_{2} O ⟶ 2 N a O H + H_{2}

2 H_{2} + O_{2} ⟶ 2 H_{2} O

I I

2 N a + \frac{1}{2} O_{2} ⟶ N a_{2} O

N a_{2} O + H_{2} O ⟶ 2 N a O H

What is the mechanism of following reactions in the preparation of hydrogen:

Zn+2NaOH=Na₂ZnO₂ +H₂

2Al+2NaOH+2H₂O=2NaAlO₂ +3H₂

Sn+2NaOH+H₂O=Na₂ZnO₃+ 2H₂

N H_{4} N O_{2} \to N_{2} + 2 H_{2} O

Time (minutes)	10	25	$\infty$
Vol.of $N_{2}$ ml	6.25	13.65	35.05

Join BYJU'S Learning Program