Single Answer MCQ
Q-00004441
Which of the following is NOT a correctly balanced equation?
1
2Na + Cl2 → 2NaCl
2
4H + O2 → 2H2O
3
C3H8 + 5O2 → 3CO2 + 4H2O
4
Mg + HCl → MgCl2 + 2H2
Answer and Solution
Answer
D. Mg + HCl → MgCl2 + 2H2
Solution:
The last equation is not balanced as there are two hydrogen atoms on the products side while there is only one on the reactants side.
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