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Calculate amount of heat evolved when ...

Calculate amount of heat evolved when
(a) 500 `cm^(3)` of 0.5 hydrocloric acid is mixed with `200 cm^(3)` of 0.8 M NaOH solution.
(b) `250 cm^(3)` of `0.4 M H_(2)SO_(4)` is mixed with `500 cm^(3)` of `0.2 M NaOH` solution.

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To calculate the amount of heat evolved in the given reactions, we will follow these steps: ### Part (a): Mixing HCl and NaOH 1. **Calculate the moles of HCl:** - Volume of HCl = 500 cm³ = 0.500 L - Molarity of HCl = 0.5 M - Moles of HCl = Molarity × Volume = 0.5 mol/L × 0.500 L = 0.25 moles ...
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