Calculate the amount of heat released when:
(i) 100 mL of 0.2 M HCl solution is mixed with 50 mL of 0.2 M KOH.
(ii) 200 mL of 0.1 M `H_(2)SO_(4)` is mixed with 200 mL of 0.2 M KOH solution.

Explanation

To solve the question, we need to calculate the amount of heat released during the neutralization reactions in both parts (i) and (ii).

### Part (i): Mixing 100 mL of 0.2 M HCl with 50 mL of 0.2 M KOH

1. **Calculate the moles of HCl:**
- Molarity (M) = moles/volume (L)
- Volume of HCl = 100 mL = 0.1 L
- Moles of HCl = Molarity × Volume = 0.2 mol/L × 0.1 L = 0.02 moles
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