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2 years ago

The ionization potential of Be atom is more than expected because it has -

Chemistry

2 answers:

VLD [36.1K]2 years ago

8 0

B fully filled valence s orbitals

Hope that helped

Gre4nikov [31]2 years ago

6 0

Answer:

(b) fully filled valence s orbitals

Explanation:

Electron configuration of Be: 1s22s2

2s2 is fully filled

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2 years ago

In a unimolecular reaction with twice as much starting material as product at equilibrium, what is the value of Keq? Is ΔG o pos

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Answer : The value of $K_{eq}$ is, 0.5 and $\Delta G$ = positive.

Explanation :

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$A=2B$ .........(1)

As we know that:

$K_{eq}=\frac{B}{A}$ ...........(2)

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$K_{eq}=\frac{\frac{A}{2}}{A}$

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Now we have to calculate the value of $\Delta G^o$ at 298 K.

$\Delta G^o=-RT\ln K_{eq}$

where,

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

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T = temperature = 298 K

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

$\Delta G^o=-(8.314J/mol.K)\times (298K)\ln (0.5)$

$\Delta G^o=1717.32J/mol$

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As we know that:

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

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

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

Thus, the $\Delta G$ = +ve. So, the reaction is non spontaneous.

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3 years ago