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

4g hydrogen reacts with 20g of oxygen to form water. The mass of water formed is:

A
24g
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
36g
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
22.5g
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
40g
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is

B

22.5g



H2+12O2H2O

Mass-4g20g
Moles-20.625

1 mole of H2 requires 0.5 moles of O2.

1.25 moles of H2 requires 0.625 moles of O2

O2 is a limiting reagent.

0.5 mole O21 mole H2O

0.625 mole O2=1×0.6250.5 moles H2O.

=1.25 moles of H2O

Therefore, mass of H2O formed =1.25×18=22.5 gm

Hence, option B is correct.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Atomic Mass
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon