Enthalpies of solution of BaCl2(s) and BaCl2.2(s) are -20.6 kJ/mol and 8.8 kJ/mol, respectively. δ H hydration of BaCl2(s) to BaCl2.2(s) is

Name: JEE Advanced Chemistry
Price: 7999 INR
Availability: InStock

Question

Enthalpies of solution of BaCl2(s) and BaCl2.2$H_2O$(s) are -20.6 kJ/mol and 8.8 kJ/mol, respectively. δ H hydration of BaCl2(s) to BaCl2.2$H_2O$(s) is

Prashant Kotian · Accepted Answer

Correct answer: A. The hydration reaction is: BaCl2(s) + 2(l) -> BaCl2.2(s). By Hess's law: δ H_hyd = δ H_sol(BaCl2, s) - δ H_sol(BaCl2.2, s) = -20.6 - 8.8 = -29.4 kJ.

💡 Solution & Explanation

Practice 22,000+ questions like this