Q.

Enthalpies of combustion of Rhombic Sulphur and monoclinic Sulphur are 70.96 and 71.03 K cal/mol respectively. Then the heat of conversion of Rhombic Sulphur to mono clinic Sulphur is 10x cal /mol. The value of x is _____

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answer is 7.

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Detailed Solution

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SR+O2SO2,  H=-70.96  SM+O2SO2, H=-71.03 SRSM, H=-70.96+71.03 =0.07 k.cal =70 cal

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