Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  CBSE XII  >>  Chemistry  >>  Solutions
0 votes

Ethylene glycol (molar mass =$62g mol^{-1})$ is a common automobile antifreeze.Calculate the freezing point of a solution containing 12.4 of this substance in 100g of water would it be advisable to keep this substance in the car radiator during summer?

$\begin{array}{1 1}1.024K\\1.034K\\1.054K\\1.064K\end{array} $

Can you answer this question?

1 Answer

0 votes
$K_f$ for water =$1.86$kg/mol
$K_b$ for water =$0.512$kg/mol
$\Delta T_b=K_b\times \large\frac{W_B}{M_B}\times \frac{1000}{W_A}$
$\Rightarrow 0.512\times \large\frac{12.4}{62}\times \frac{1000}{100}$
$\Rightarrow 1.024K$
Since water boils at $100^{\large\circ}$C,so a solution containing ethylene glycol will boil at $101.04^{\large\circ}C$ so it is advisable to keep this substance in car radiator during summer.
answered Aug 8, 2014 by sreemathi.v

Related questions

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