Question

balance the following equation
NaBh4 (s) + BF3 (g) - B2H6 (g) + NaBF4 (s)

Answer 1

The given chemical equation is

NaBH₄ (s) + BF₃ (g) $\rightarrow$ B₂H₆ (g) + NaBF₄ (s)

We can balance the given equation by adjusting stoichiometric coefficients of the chemical species to obtain the same number of atoms of elements on both sides of the equation.

Then adjusting the coefficients,

3 NaBH₄ (s) + 4 BF₃ (g) $\rightarrow$ 2 B₂H₆ (g) + 3 NaBF₄ (s)

Now checking the number of atoms of elements on both sides. 3 sodium atoms on both sides of the equation, 7 boron atoms each on reactant and product side, 12 hydrogen atoms and 12 fluorine atoms on both sides of the equation. So the equation got balanced.

The balanced equation is 3 NaBH₄ (s) + 4 BF₃ (g) $\rightarrow$ 2 B₂H₆ (g) + 3 NaBF₄ (s)