In viewing a chemical equation,we <span>determine the ratios that relate reactants and products </span>from the coefficients of the reactants and products .

5 0

4 years ago

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For a given reaction, ΔS = +106 J/mol ⋅ K, and the reaction is spontaneous at temperatures above the crossover temperature, 446

solniwko [45]

Answer: 47.276 kJ/mol

Explanation:

According to Gibb's equation:

$\Delta G=\Delta H-T\Delta S$

$\Delta G$ = Gibbs free energy

$\Delta H$ = enthalpy change

$\Delta S$ = entropy change = +106 J/mol

T = temperature in Kelvin = 446 K

$\Delta G$ = +ve, reaction is non spontaneous

$\Delta G$ = -ve, reaction is spontaneous

$\Delta G$ = 0, reaction is in equilibrium

$\Delta H=T\Delta S$

$\Delta H=446K\times +106J/Kmol=47276J/mol=47.276kJ/mol$ (1kJ=1000J)

Thus the value of ΔH = 47.276 kJ/mol, assuming that ΔH and ΔS do not vary with temperature.

7 0

3 years ago

Air with less than 19.5% oxygen cannot support human life. How many moles of oxygen would the caisson if the percent of oxygen i

irinina [24]

Are we adding the percent?

8 0

3 years ago

Calculate the molar mass of salicylic acid, c7h6o3.

gtnhenbr [62]

12×7+1×6+16×3=90+48=138

7 0

3 years ago