MHT CET Chemistry question
Diborane is a potential rocket fuel which undergoes combustion according to the equation . Calculate the enthalpy change for the combustion of diborane. Given: (i) ; (ii) ; (iii) ; (iv) ;
Answer: (B)
Solution
Required = (i) + 3[(ii) + (iii)] - (iv) = -1273 + 3(-286 + 44) - 36 = -1273 - 726 - 36 = -2035 kJ ; (a) and (c)
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