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

question 116

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 ^$\circ$ 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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