32g of anhydrous copper(ii)tetraoxosulphate(vi) dissolved in 1dm³ of water generated 13.0kj of heat. The heat solution is?

A. 26.0kj/mol
B. 65.0kj/mol
C. 130.0kj/mol
D. 260.0kj/mol

Correct Answer:

Option B = 65.0kj/mol

Explanation

32g of CUSO4 liberate 13.0kj of heat

Molar mass of CUSO4 = 160g

No. of moles of CUSO4 = 32g

No. of moles = 32(mass) / 160(molar mass)

= 0.2 moles

i.e 0.2 = 13kj

1 moles = xkj

: 65KJ