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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

1 Hard

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Application +4 | -1

A 10 mg effervescent tablet containing sodium bicarbonate and oxalic acid releases 0.25 mL of

C{O_2}

at T = 298.15 K and

p = 1

bar. If molar volume of

C{O_2}

is 25.0 L under such condition, what is the percentage of sodium bicarbonate in each tablet?
[Molar mass of

NaHC{O_3} = \,84\,\,g\,\,mo{l^{ - 1}}]

View answer and explanation

Correct option: C

0.84

Option C (0.84) is correct because it is calculated by determining the moles of CO2 released and then using stoichiometry to find the mass percentage of sodium bicarbonate.

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