A 100ML Sample of 0 $\rarr$ NH₄Cl(aq)
the Temperature Increase Is 2

question 106

Multiple Choice

A 100.mL sample of 0.200 M aqueous hydrochloric acid is added to 100.mL of 0.200 M aqueous ammonia in a calorimeter whose heat capacity (excluding any water) is 480.J/K.The following reaction occurs when the two solutions are mixed. HCl(aq) + NH₃(aq) $\rarr$ NH₄Cl(aq)
The temperature increase is 2.34°C.Calculate $\Delta$ H per mole of HCl and NH₃ reacted.

• A)-154 kJ/mol
• B)-1.96 kJ/mol
• C)1.96 kJ/mol
• D)154 kJ/mol
• E)485 kJ/mol

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