JEE Main 2019 — Some Basic Concepts Of Chemistry Question with Solution
From: JEE Main 2019 (Online) 11th January Evening Slot
Question
25 ml of the given HCl solution requires 30 mL of 0.1 M sodium carbonate solution. What is the volume of this HCl solution required to titrate 30 mL of 0.2 M aqueous NaOH solutions ?
Choose an option
Show full solutionCorrect option: C
Correct answer
C25 mL
Step-by-step explanation
2HCl(aq) + Na2CO3(aq) H2CO3 + NaCl
Molarity of HCl (M) =
HCl(aq) + NaOH(aq) NaCl + H2O
V = 25 ml
moles of HCl
2
=
moles of Na2CO3
1
Molarity of HCl (M) =
HCl(aq) + NaOH(aq) NaCl + H2O
moles of HCl
1
=
moles of NaOH
1
V = 25 ml
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This is a previous-year question from JEE Main 2019, covering the Some Basic Concepts Of Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.