Question

Which chemical reaction model is flawed and why?
A) 4C2+S8 -> 4CS2
B) 2Fe+3Cl2 -> 2FeCl3
C) 2Na+Cl2 -> 2NaCl
D) P4O10+6H2O -> 4H3PO4

Answer 1

A.
A is the answer because it’s the only one where it isn’t balances
It starts with 8 C and 8 S but results with only 4C and 8S it’s short of 4C which is why it is wrong

Answer 2

Answer: A) 4C2+S8 -> 4CS2

Explanation:

The chemical equation

4C2+S8 -> 4CS2 is flawed because the equation is not balanced i.e the carbon atom at the reactant is not equal to that of the product and for a chemical reaction to be a balanced equation, the number of atoms of elements at the reactants must be equal to that of the product.

As you can see, there are 8 atoms of carbon(C) at the reactant while we have only 4 carbon atoms at the product therefore making the equation unbalanced.