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Chemical Reaction

What type of ...

Question

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) ${CuSO}_{4} + 2 NaOH \underset{}{\to} Cu (OH)_{2} {Na}_{2} {SO}_{4}$

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Solution

(a) Combination reaction

(b) Displacement reaction

(c) Displacement reaction

(d) Decomposition reaction

(e) Double displacement reaction

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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

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