Question

Calculate the standard enthalpy of formation of CHOH @ given that the enthalpies of combustion of
methanol, Cigraphite) and hydrogen are -726, -393.5 and -286 kJmolt respectively.
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Answer 1

Required Eqn. CH3OH(l) + O2(g) → f CO2(g) + 2H2O(l) ΔcH = -?Given data.(1) C(s) + 2H2(g) + 1/2O2(g) → CH3OH(l) ΔfH = = -239 kJ.(2) C(s) + O2(g) → CO2(g) ΔfH = -393.5 Id.(3) H2(g) + O(g) → H2O(l) ΔfH = -286 kJ.Reverse eqn(1) and multiply 3 by 2 and add all three...

Answer 2

Explanation:

by adding the same constant to each of 20, 50, 100 a geometric progression result. what is the common ratio?Hereisuranswer

{Sanskrit to Hindi translation}

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सः सौचिक:।

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