JEE Main 2022 Chemistry question
When 600 mL of 0.2 M is mixed with 400 mL of 0.1M NaOH solution in a flask, the rise in temperature of the flask is °C. (Enthalpy of neutralisation = 57 kJ and Specific heat of water = 4.2 ) (Neglect heat capacity of flask)
Answer: 54
Solution
The moles are 120 mmol of and 40 mmol of NaOH, so 40 mmol of water is formed and the heat released is 10^{-3}$ × 57 ×
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