NEET UG CHEMISTRY MCQ: Equilibrium

1 Hard

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Analyzing +4 | -1

What is the correct relationship between the

\mathrm{pHs}

of isomolar solutions of sodium oxide

\left(\mathrm{pH}_1\right)

, sodium sulphide

\left(\mathrm{pH}_2\right)

, sodium selenide

\left(\mathrm{pH}_3\right)

and sodium telluride

\left(\mathrm{pH}_4\right)

View answer and explanation

Correct option: A

\mathrm{pH}_1 > \mathrm{pH}_2 > \mathrm{pH}_3 > \mathrm{pH}_4

Option A (

\mathrm{pH}_1 > \mathrm{pH}_2 > \mathrm{pH}_3 > \mathrm{pH}_4

) is correct because the basic strength of the oxides/chalcogenides decreases down the group.

More Questions from Equilibrium

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Mg{(HC{O_3})_2}

MgC{O_3}

Mg{(OH)_2}

MgC{O_3}

K_{\mathrm{P}}

\mathrm{CaCO}_3

4.5 \times 10^{-2}

\mathrm{C}(\mathrm{s})+\mathrm{CO}_2(\mathrm{g}) \rightleftharpoons 2 \mathrm{CO}(\mathrm{g}),

K_{\mathrm{P}}

2.0 \mathrm{~atm}.

\mathrm{CaO}

\mathrm{CaCO}_3

+

\leftrightharpoons

\mathrm{PC}{\mathrm{l}_5}\leftrightharpoons\mathrm{PC}{\mathrm{l}_3} + \mathrm{C}{\mathrm{l}_2}

{K_{\mathrm{eq}}} = 0.41

\mathrm{p}{K_a}