Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • A solution is prepared by dissolving 5 g of  in 500 mL of water. The molarity of the solution is:<div clas

A solution is prepared by dissolving 5 g of NaOH in 500 mL of water. The molarity of the solution is:

Option: 1

0.1 M


Option: 2

0.5 M


Option: 3

1 M


Option: 4

2 M


Answers (1)

best_answer

\\\textrm{Molarity (M)= Number of moles of solute/Volume of solution in litres} \\ \\\mathrm{\textup{Molecular weight of NaOH} = 23+16+1=40 \mathrm{~g} / \mathrm{mol}}

\\\textup{Number of moles of NaOH}=\frac{5 \mathrm{~g}}{ 40 \mathrm{~g} / \mathrm{mol}}=0.125 \mathrm{~mol} \\\\ \textup{Volume of solution in litres} =\frac{500 \mathrm{~mL}}{1000}=0.5 \mathrm{~L} \\\\\mathrm{ Molarity =\frac{0.125 \mathrm{~mol} }{ 0.5 \mathrm{~L}}=0.5\ \mathrm{M}}

Posted by

Info Expert 30

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

‘Don’t lose confidence in exam hall’: AIR 7 Keshav Mittal shares last-minute tips for NEET 2026 aspirants
anam-khan

NEET UG 2026 City Slip (OUT) LIVE: NTA issues allotment slip; admit card soon, exam on May 3
anam-khan

NEET UG 2026 city intimation slip out for over 26 lakh; exam on May 3

Latest Question