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For question number 22 I`m getting the answer as y-2x but it is not in the option, so please suggest me which option is correctI`ve solved it as;S + 3/2O2 -->SO3 + 2x kJ as 1 SO2 + ½O2 --> SO3 + y kJ as 2and S + O2 --> SO2 + q kJ as 3Subtracting 1 from 2 I got 3, I.e.., q = 2x - yEnthalpy change = -q => -(2x-y)therefore, y - 2x is the answer

For question number 22 I`m getting the answer as y-2x but it is not in the option, so please suggest me which option is correctI`ve solved it as;S + 3/2O2 -->SO3 + 2x kJ as 1 SO2 + ½O2 --> SO3 + y kJ as 2and S + O2 --> SO2 + q kJ as 3Subtracting 1 from 2 I got 3, I.e.., q = 2x - yEnthalpy change = -q => -(2x-y)therefore, y - 2x is the answer

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Grade:12

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4404 Points
5 years ago
in exothermic reaction H is negative thatwhy you are getting different sign

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