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

Two elements C and D combine to form two compounds CxDy and CyDx. 0.5 mol of CyDx weigh 40 g and 1 molecule of CxDy weigh 1.66×1025 kg. The atomic weight of C and D are 20 and 40 respectively. Find the value of x and y respectively.

A
3,2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
1,3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
1,2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
2,2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 1,2
weight of 1 molecule of CxDy = 1.66×1025 kg
So, weight of 1 mole of CxDy = 1.66×1025×NA kg = 100 g
For CxDy = 20x + 40y = 100 ....(1)
1 mol of CyDx weigh 80 g
For CyDx = 40x + 20y = 80 .....(2)
On solving, x = 1 and y = 2

flag
Suggest Corrections
thumbs-up
8
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Stoichiometry of a Chemical Reaction
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon