Question

This formula equation is unbalanced. BaCl2(aq) + Na2CO3(aq) mc017-1.jpg BaCO3(s) + NaCl(aq) Which coefficient should be placed in front of NaCl to balance this equation? 1 2 3 4

Answer 1

You would need to put a 2 in front of NaCl.

Hope this helps!!
~Kiwi

Answer 2

BaCl2(aq)  + Na2CO3(aq)  → BaCO3 (s)  + NaCl(aq)

The coefficient that  should  be  placed in front  of NaCl  to balance the equation above  is 2

The balanced equation  is as below

BaCl(aq)  + Na2CO3 (aq)→ BaCO3 (s)  + 2NaCl (aq)

Explanation

According to law of mass conversation the number of atoms  of an element  must be equal  in both side of reaction.

By adding 2  in front of NaCl ensures that  the number  of each element  is equal  in both side.

for example there  is 2 atoms  of Na in both reactant and product side.