wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

34.05 mL of phosphorus vapour weighs 0.0625 g at 546C and 1 bar pressure. What is the molar mass of phosphorus?

Open in App
Solution

Given,P=1.0 bar V=34.05 mL= 34.05×103L=34.05×103dm3R=0.083 bar dm3K1mol1T=546C=(546+273)K=819K
The number of moles (n) can be calculated using the ideal gas equation as:
PV=nRTn=pVRT=1.0×34.05×1030.083×819=5.01×104 mol
Therefore, molar mass of phosphorus =0.06255.01×104124.75gmol1
Hence, the molar mass of Phosphorus, P4 is 124.75 gmol1.


flag
Suggest Corrections
thumbs-up
53
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon