Total number of ${\rm{Al}}{{\rm{F}}_3}$ molecules in a sample of ${\rm{Al}}{{\rm{F}}_3}$ containing $3.01 \times {10^{23}}$ ions of ${{\rm{F}}^ - }$is :

NEET UG CHEMISTRY MCQ: REDOX REACTIONS

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Total number of

\mathrm{Al}{\mathrm{F}_3}

molecules in a sample of

\mathrm{Al}{\mathrm{F}_3}

containing

3.01 \times {10^{23}}

ions of

{\mathrm{F}^ - }

is :

View answer and explanation

Correct option: D

{10^{23}}

Option D (

{10^{23}}

) is correct because each AlF3 molecule contains 3 fluoride ions, so the number of AlF3 molecules is one-third the number of fluoride ions.

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{I_2}

\mathrm{MnO}_4^ - + {\mathrm{C}_2}\mathrm{O}_4^{2 - } + {\mathrm{H}^ + } \to \mathrm{M}{\mathrm{n}^{2 + }} + \mathrm{C}{\mathrm{O}_2} + {\mathrm{H}_2}\mathrm{O}

\mathrm{MnO}_4^ -

{\mathrm{C}_2}\mathrm{O}_4^{2 - }

{\mathrm{H}^ + }