Ask Questions, Get Answers

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

The legal limit for human exposure to CO in the work place is 35ppm.Assuming that the density of air is $1.3g/L$,how many grams of CO are in 1.0L of air at the maximum allowable concentration?

$\begin{array}{1 1}4.55\times 10^{-5}g\;CO\\3.55\times 10^{-5}g\;CO\\2.55\times 10^{-5}g\;CO\\1.55\times 10^{-5}g\;CO\end{array} $

Can you answer this question?

1 Answer

0 votes
35 ppm CO,means $10^6g$ of air contains =$35g\;CO$
$\therefore$ Volume of air =$\large\frac{\text{mass of air}}{\text{density of air}}$
$\Rightarrow \large\frac{10^6}{1.3}$$=7.69\times 10^5L$
Now since $7.69\times 10^5L$ of air has =35g CO
$\therefore$ 1L of air has =$35/7.69\times 10^5\;CO$
$\Rightarrow 4.55\times 10^{-5}g\;CO$
answered Aug 7, 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