Question

Consider the unbalanced chemical equation HBr + B = BBr3 + H2. When

coefficients are added to balance the equation, which two substances will
have a coefficient of 2?
D A. H2
B. HBr
C. BBrg
D D B

Answer 1

B and BBr3

Step-by-step explanation:

1) 3HBr + B = BBr3 + H2 (double all equation because H2)

2) 6HBr + 2B = 2BBr3 + 3H2