Find out the number of following orders which are correct against the mentioned properties : (i) H 2

Question

Find out the number of following orders which are correct against the mentioned properties :

(i) $H_{2} < D_{2} < T_{2}$ (Number of protons)

(ii) $H_{2} < D_{2}$ (Bond energy)

(iii) $H_{2} < D_{2} < T_{2}$ (Boiling point)

(iv) $H_{2} < D_{2} < T_{2}$ (No. of neutrons)

TestHub · Accepted Answer

Question Explanation:

Evaluate the correctness of property orders. Concept: Isotopic effects and chemical properties.

Solution:

(i)

$H_{2} D_{2} T_{2}$

$P = 1 \times 21 \times 21 \times 2 same$

(ii) Bond dissociation enthalpy for $D_{2} = 443 kJ / mol$

$for H_{2} = 435 kJ / mol$

(iii) High molecular mass, higher vander waal forces

$BP : H_{2} < D_{2} < T_{2}$

(iv) $H_{2} < D_{2} < T_{2}$

$n = 0 \times 21 \times 22 \times 2$

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