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

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