The solubility of borax is directly proportional to temperature. Therefore, the sign of H is
A. negative
B. positive
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
To determine the sign of H (the enthalpy change), we need to consider the relationship between solubility and temperature. The statement suggests that as the temperature increases, the solubility of borax also increases.
Based on the information given, we can conclude that solubility is an endothermic process. This means that as the substance is dissolved, heat is absorbed from the surroundings. In an endothermic process, the sign of H is positive.
Therefore, the correct answer is B. positive.