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4 years ago

Please please please please help

Chemistry

1 answer:

ANEK [815]4 years ago

7 0

Answer:

# of protons: 17

Mass #: 36

#of electrons: 17

Element: Chlorine (Cl)

Explanation:

# of protons: based on atomic#

Mass #: protons+neutrons

#of electrons: based on atomic# if it's neutral charge

Element: use the Periodic Table to find element 17 (each element has their corresponding atomic#)

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For the reaction C2H4(g) + H2O(g) --> CH3CH2OH(g)

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As we know that,

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$\Delta G^o$ = standard Gibbs free energy = ?

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$\Delta G^o=(-45600J)-(262.0K\times -125.7J/K)$

$\Delta G^o=-12666.6J=-12.7kJ$

The relation between the equilibrium constant and standard Gibbs free energy is:

$\Delta G^o=-RT\times \ln k$

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$\Delta G^o$ = standard Gibbs free energy = -12666.6 J

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Now put all the given values in the above formula, we get:

$-12666.6J=-(8.314J/K.mol)\times (262.0K)\times \ln k$

$k=3.35\times 10^{2}$

Therefore, the value of equilibrium constant for this reaction at 262.0 K is $3.35\times 10^{2}$

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