What type of reactions are represented by the following equations

(a) $C a O + C O_{2} ⟶ C a C O_{3}$

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

(c) $M g + C u S O_{4} ⟶ M g S O_{4} + C u$

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

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

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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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CaO + {CO}_{2} \underset{}{\to} {CaCO}_{3}

2 Na + 2 H_{2} O \underset{}{\to} 2 NaOH + H_{2}

Mg + {CuSO}_{4} \underset{}{\to} {MgSO}_{4} + Cu

{NH}_{4} {NO}_{2} \underset{}{\to} N_{2} + 2 H_{2} O

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

2 NaOH (aq) + {CuSO}_{4} (aq) \to {Na}_{2} {SO}_{4} (aq) + ?

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

2 N a O H + H_{2} S O_{4} ⟶ N a_{2} S O_{4} + 2 H_{2} O

H C l + N a O H \to N a C l + H_{2} O + x c a l .

H_{2} S O_{4} + 2 N a O H \to N a_{2} S O_{4} + 2 H_{2} O + y c a l

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