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

Which of these chemical equations is not balanced?


A

2Mg (s)+O2 (g)2MgO (s)

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

CO2 (g)+6H2O (l)C6H12O6(s)+6O2 (g)

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C

CuCl2 (aq)+Pb (NO3)2(aq)Cu(NO3)2(aq)+PbCl2 (g)

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

CaCO3 (s)CaO (s)+CO2 (g)

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B

CO2 (g)+6H2O (l)C6H12O6(s)+6O2 (g)


In an unbalanced chemical equation, the number of atoms of each element on either side of the arrow i.e. on the reactant and product side is not equal.
If you count the number of atoms for equations given in options then we have the equal number atoms of each element on reactant and product side except for one reaction. We don't have the equal number of atoms on the reactant and product side for the reaction given below:

CO2 (g)+6H2O (l)C6H12O6 (s)+6O2 (g)

Clearly, number of carbon and oxygen atoms on the reactant side is not equal to that in the product side.
The balanced chemical equation would be:

6CO2 (g)+6H2O (l)C6H12O6 (s)+6O2(g)


flag
Suggest Corrections
thumbs-up
2
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Mole Concept in Balanced Reaction
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon