4 years ago

Calculate the entropy change when 4.31 g of H2 reacts with O2 according to the reaction

Chemistry

1 answer:

Mazyrski [523]4 years ago

8 0

Answer:

Explanation:

ΔG = Δ H - T ΔS

Given , ΔG = -237.2 kJ / mol

Δ H = - 285.8 kJ / mol

T = 298

Putting the values in the equation

-237.2 = - 285.8 - 298 x ΔS

ΔS = .163 kJ / mole K

moles of water formed = 4.31 / 2 = 2.155

entropy change required = 2.155 x .163 kJ / K

= 351.26 J / K .

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