1.

73.According to equation,mol-1 the energy evolved whernAH =-3264.4 KJ7.8 g benzene is burnt in air will be(1) 163.22 KJ(3) 3.264 KJ(2) 32.64 KJ(4) 326.4 KJ

Answer»

For 1 moles of benzene the value of. ∆H = -3264.4KJ/mol

molar mass of benzene is = 78gm

so, the energy evolved in 7.8 gm or (7.8/78) = 0.1 moles is

= 0.1*(3264.4) = 326.4KJ

option D.



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