Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  JEEMAIN and AIPMT  >>  Chemistry  >>  Solutions
0 votes

An aqueous solution of HCl has 2% mass of HCl and a density of $1.02gcm^{-3}$ .The numerical values of molarity and molality,respectively, are

$\begin{array}{1 1}0.542,0.652\\0.652,0.542\\0.559,0.652\\0.559,0.559\end{array} $

Can you answer this question?

1 Answer

0 votes
Answer : 0.559,0.559
Mass of HCl=2g
Mass of water=98g
Amount of HCl =$(2g/36.5gmol^{-1})=0.0548mol$
Volume of 100g HCl solution =$100g/1.02gmL^{-1}=98.03mL$
Molarity of HCl=$n/V=0.0548mol/98.08\times 10^{-3}L=0.559molL^{-1}$
Molality of HCl=$n/m_1=0.0548mol/98\times 10^{-3}kg=0.559molkg^{-1}$
answered Jul 22, 2014 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App