Δ Hsolution of anhydrous CuSO4 is -15.9 kcal/mol and heat of hydrate of CuSO4(s) into CuSO4.5H2O(s) is -18.9 kcal/mol. The heat of solution of CuSO4.5H2O is

Question

Δ Hsolution of anhydrous CuSO4 is -15.9 kcal/mol and heat of hydrate of CuSO4(s) into CuSO4.5H2O(s) is -18.9 kcal/mol. The heat of solution of CuSO4.5H2O is (A) -3.0 kcal/mol (B) +3.0 kcal/mol (C) -34.8 kcal/mol (D) +34.8 kcal/mol

Tardigrade Admin · Accepted Answer

Correct answer is (b) +3.0 kcal/mol

Q. ΔHsolution​ of anhydrous CuSO4​ is −15.9 kcal/mol and heat of hydrate of CuSO4​(s) into CuSO4​.5H2​O(s) is −18.9 kcal/mol. The heat of solution of CuSO4​.5H2​O is

-3.0 kcal/mol

+3.0 kcal/mol

-34.8 kcal/mol

+34.8 kcal/mol

Correct answer is (b) +3.0 kcal/mol

Q. $Δ H_{so l u t i o n}$ of anhydrous $C u S O_{4}$ is $- 15.9$ kcal/mol and heat of hydrate of $C u S O_{4} (s)$ into $C u S O_{4} .5 H_{2} O (s)$ is $- 18.9$ kcal/mol. The heat of solution of $C u S O_{4} .5 H_{2} O$ is