Question

NaBr + CaF2 → NaF + CaBr2 What coefficients are needed to balance the chemical equation? A) 1,1,1,1 B) 1,2,1,2 C) 1,2,2,1 D) 2,1,2,1

Answer 1

D.
2NaBr + CaF2 --> 2NaF + CaBr2 gives you:

2Na 2Na
2Br 2F
1Ca 1Ca
2F 2Br

This is balanced.

Answer 2

The correct answer is the D which 2,1,2,1.

Step-by-step explanation:

• In a balanced chemical equation, the number of particular atom on the right side of the equation is equal to the number of that atom on the left side of the equation.
• As in the left side of the equation, there are 2 F atom and 1 Br. While on the right side there are 1 F and 2 Br. S for the balancing, we will put coefficient to the equation.
• And the equation will be:

2NaBr + CaF2 → 2NaF + CaBr2