Chemistry - Concentration Terms Question with Solution | TestHub

ChemistryConcentration TermsConcentration termMedium2 minPYQ_2017
ChemistryMediumassertion reason

Excess ofNaOH (aq)was added to100 mLofFeCl3 aqresulting into2.14 gofFeOH3. The molarity ofFeCl3aqis:

(Given the molar mass of Fe=56 g mol-1and molar mass ofCl=35.5 g mol-1)

Options:

Answer:
B
Solution:

Moles ofFeOH3=2.14107=2×10-2mol

MolesFeCl3=100ml×103×M

According to stoichiometry, mole ofFeCl3=Mole of Fe(OH)3

100 × 103×M=2×102

M=2×10-2100×1000=0.2 M

Stream:JEESubject:ChemistryTopic:Concentration TermsSubtopic:Concentration term
2mℹ️ Source: PYQ_2017

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