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X(g) + 3Y(g) ---- 2z(g) H = +ve. if the reaction above ta...

X(g) + 3Y(g) ---- 2z(g) H = +ve. if the reaction above takes place at room temperature, the G will be

A.

negative

B.

zero

C.

positive

D.

indeterminate

Correct answer is A

Enthalpy Change [ΔH]Entropy Change [ΔS]Gibbs free Energy[ΔG]PositivePositivedepends on T, may be + or -NegativePositivealways negativeNegativeNegativedepends on T, may be + or -PositiveNegativealways positive

ΔG= ΔH − TΔS.
To determine whether ΔG will be positive or negative, the value of ΔH(change in enthalpy) and ΔS (change in entropy) must be given. Likewise the temperature.