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2 years ago

Charles's law describes the relationship of the volume and temperature of

Chemistry

1 answer:

True [87]2 years ago

7 0

Answer:

The temperature would be reduced by half

Explanation:

Charles' Law => V ∝ T => V = kT => k = V/T

For two sets of T vs V conditions, the system constant (k) remains unchanged and k₁ = k₂ => V₁/T₁ = V₂/T₂.

Therefore, if V₁ is reduced to 1/2V₁ = V₂ => V₁/T₁ = 1/2V₁/T₂ => V₁/T₁ = V₁/2T₂

and solving for T₂ => 1/T₁ = 1/2T₂ => 2T₂ = T₁ => T₂ = 1/2T₁

∴ The initial temperature (T₁) would be reduced by half or, T₂ = 1/2T₁

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As per ionic model, ionic compounds are held together by electrostatic force. The ionic compound having strong electrostatic force will have high melting point.

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Charge on Mg = +2

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In case of LiF

Charge on Li = +1

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Charge on Al = +3

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$F=-k \frac{(+3)\times (-3)}{r^2}=\frac{9k}{r^2}$

In case of RbF

Charge on Rb = +1

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As magnitude of electrostatic force is highest in AlN, therefor, it has highest melting point.

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