3 years ago

Why are gas bubbles not always a sign of a chemical change?

Chemistry

1 answer:

Mekhanik [1.2K]3 years ago

3 0

Answer: its a reaction

Explanation:

like coke its a reaction between gas and oxygen

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Answer:

a) $\Delta G=372490 J$

b) $\Delta G=-568614 J$

Explanation:

a) The reaction:

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b) If you have values of enthalpy and enthropy you can calculate the free-energy by:

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

with T in Kelvin

$\Delta G=-675 kJ*\frac{1000J}{kJ} - 298K*-357 J/K$

$\Delta G=-568614 J$

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