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ChemistryStoichiometryProblems Based on Mixtures, Percentage PurityMedium2 minQB

ChemistryMediuminteger

Acid sample is prepared using $HCl, H_{2} SO_{4}, H_{2} SO_{3} & H_{3} PO_{4}$ separately or as mixture of any two or more. Calculate the minimum volume of $4% w / v NaOH$ added (in L ) to 294 gm sample, in order to ensure complete neutralisation in every possible case.

Answer:

Solution:

$H Cl$ $H_{2} S O_{4}$ $H_{2} S O_{3}$ $H_{3} P O_{4}$

36.5 98 82 98

$4%$ W/V ⟹ 1 Molar NaOH

$H_{3} P O_{4} + 3 N a O H ⟶ N a_{3} P O_{4} + 3 H_{2} O$

3 9 Moles

Moles of NaOH required = 9 = $M_{1} V_{1} ⟹ V_{1} = 9 l i t res$

$V_{1} = 9000$ ml.

Stream:JEESubject:ChemistryTopic:StoichiometrySubtopic:Problems Based on Mixtures, Percentage Purity

⏱ 2mℹ️ Source: QB

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