Verified Solution • 2025–26 Session moderate

QAIPM-2001-Ch-2885: NEET 2001 Chemistry - Class 11 AIPM-2001-Ch-2885 Solution: Enthalpy of \(CH_4+ {1}{2}O_2 CH_3OH\) is negative. If enthalpy …

Enthalpy of CH4+12O2→CH3OHCH_4+\frac{1}{2}O_2\rightarrow CH_3OH is negative. If enthalpy of combustion of CH4CH_4 and CH3OHCH_3OH are x and y respectively. Then which relation is correct?

Multiple Choice Options

  • A x>yx>y
  • B x<yx<y
  • C x=yx=y
  • D x≥yx\ge y

Step-by-Step Verified Solution

CH 4 + 1 2 O 2 _ CH 3 OH Given that for this reaction, _ H r = -ve CH 4 + 2O 2 _ CO 2 + 2H 2 O,    _ H = x ....(1) CH 3 OH + 3 2 O 2 _ CO 2 + 2H 2 O,    _ H = y ....(2) Eqn. (1) � Eqn. (2) CH 4 + 1 2 O 2 _ CH 3 OH _ H r = x - y = -ve _ x < y

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