The solubility of borax is directly proportional to temperature. Therefore, the sign of H is

A. negative
B. positive

4 answers

Le Chatelier's principle states that increasing temperature moves in the direction of the endothermic reaction.
negative
it's not negative...my guess would be positive
Positive
Le Chatelier: increase temperature--> more dissolve --> disolving has positive enthalpy change to counter the increase in temperature