When 25.23 g of methanol, CH3OH, froze, 4.01 kJ of heat was released. What is th

Question

When 25.23 g of methanol, CH3OH, froze, 4.01 kJ of heat was released. What is the enthalpy of fusion of methanol? (b) A sample of benzene was vaporized at 25 When 25.23 g of methanol, CH3OH, froze, 4.01 kJ of heat was released. What is the enthalpy of fusion of methanol? (b) A sample of benzene was vaporized at 25 When 25.23 g of methanol, CH3OH, froze, 4.01 kJ of heat was released. What is the enthalpy of fusion of methanol? (b) A sample of benzene was vaporized at 25 When 25.23 g of methanol, CH3OH, froze, 4.01 kJ of heat was released. What is the enthalpy of fusion of methanol? (b) A sample of benzene was vaporized at 25

Explanation / Answer

(a) molar mass methanol = 12+16+ 4= 32 g/mole

(4.01 Kj/25.23g)(32g/mole)= 5.09 kj/mole

(b) Molar Mass of C6H6 = (6x12)+(6x1) = 78
95g = 95/78 = 1.22 mol
37.5/1.22 = 30.8 kJ/mol

5/2R for NO and 3R for other molecules.

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