Chemistry - Mole Concept Question with Solution | TestHub

ChemistryMole ConceptMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasysingle choice

$V_{1} m L$ of NaOH of molarity X and $V_{2} m L$ of $B a (O H)_{2}$ of molarity Y are mixed together. The mixture is completely neutralized by 100 mL of 0.1N HCl. If $V_{1} / V_{2} = 1 / 4$ and X/Y = 4 then what fraction of acid is neutralized by $B a (O H)_{2}$

Options:

Answer:

Solution:

$M e q . of NaOH + Meq. of Ba (OH)_{2} = M e q . of HCl$
$X . V_{1} + 2 Y . V_{2} = 100 \times 0.1 = 10$
or $4 Y . \frac{V_{2}}{4} + 2 Y . V_{2} = 10$
or $3 Y V_{2} = 10$
$2 Y . V_{2} = 10 \times \frac{2}{3} = 6.66$
Fraction used by $B a (O H)_{2} = \frac{6.66}{10} = 0.67$

Stream:NTA_ABHYASSubject:ChemistryTopic:Mole ConceptSubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

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