If the heat change of the surroundings (such as the solution the reaction is occurring in) is determined to be 2.7 kJ, what is the heat change of the reaction (qrxn)? 2.7 kJ −2.7 kJ

Question

If the heat change of the surroundings (such as the solution the reaction is occurring in) is determined to be 2.7 kJ, what is the heat change of the reaction (qrxn)? 		 2.7 kJ 		 −2.7 kJ

aaronq · Answer

if the energy change in the surroundings is a positive number, the change in the reaction has to be negative. 

One loses and one gains.