Question

Write 10 equations of exothermic reaction

Answer 1

Answer

Exothermic Reaction ( Heat is released into the surroundings)

s - solid

g - gas

aq - aqueous

l - liquid

Δ - heat

1) Burning of coal :-

C (s) + O₂ (g)   ------> CO₂ (g)

2)Thermite reaction 

                                Δ

Al (s) + Fe₂O₃ (s) ----------> Al₂O₃ (s) + Fe ( l)

3) Reaction of quick lime with water

CaO(s) + H₂O(l) -----> Ca(OH)₂ (aq)

4) Reaction of calcium chloride and water.

CaCl₂(s) + H₂O(l) -------> Ca(OH)₂ (aq) + HCl(aq)

5) Reaction of Sodium with Water . ( Alkali - NaOH ( to manufacture soap)is formed )

Na(s) + H₂O(l) -------> NaOH(s) + H₂(g) + Heat

6) Reaction of potassium with water. ( KOH - salt is formed)

K(s) +  H₂O(l) -------> KOH(s) + H₂(g) + Heat

7) Respiration

C₆H₁₂O₆(s) + O₂(g) -------> CO₂(g) + H₂O(l) + Energy

8) Rusting of iron

Fe(s) + O₂(g) ---> Fe₂O₃ (s)(rust)

9) Neutralisation reaction

NaOH(aq) + HCl(aq) ------> NaCl(aq) + H₂O(l)

10) Displacement reaction 

H₂SO₄(aq) + Mg(s) ----> MgSO₄(aq) + H₂(g)

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