$5.88 \times 10^{-4} \mathrm{M}$

$6.12 \times 10^{-4} \mathrm{M}$

$5.44 \times 10^{-4} \mathrm{M}$

$6.48 \times 10^{-4} \mathrm{M}$

$\mathrm{H}_2 \mathrm{O}>\mathrm{H}_2 \mathrm{~S}>\mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{Te}$

$\mathrm{H}_2 \mathrm{Te}>\mathrm{H}_2 \mathrm{O}>\mathrm{H}_2 \mathrm{~S}>\mathrm{H}_2 \mathrm{Se}$

$\mathrm{H}_2 \mathrm{Te}>\mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{~S}>\mathrm{H}_2 \mathrm{O}$

$\mathrm{H}_2 \mathrm{Te}>\mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{O}>\mathrm{H}_2 \mathrm{~S}$

Cm

W

Mo

Ru

It is specific.

Heat released is in the range of $40-200 \mathrm{~kJ} / \mathrm{mol}$

Formation of multimolecular layer of adsorbate.

It is irreversible.