Question

$NaBH_{4} + I_{2} \rightarrow X + Y + Z$

$BF_{3} + NaH\overset{\quad 450K\quad}{\rightarrow}X + P$

$BF_{3} + LiAlH_{4} \rightarrow X + Q + R$

X,Y, Z, P, Q and R in the reactions are

	X	Y		Z	P	Q	R

• A. | ${Na_{4}B_{4} }O_{7}$ | NaI | | HI | HF | LiF | $AlF_{3}$ | |
• B. | $B_{2}H_{6}$ | NaI | | $H_{2}$ | NaF | LiF | $AlF_{3}$ | |
• C. | $B_{2}H_{6}$ | $BH_{3}$ | | NaI | ${B_{3}N_{3} }H_{6}$ | $Al_{2}F_{6}$ | $AlF_{3}$ | |
• D. | $BH_{3}$ | $B_{2}H_{6}$ | | $H_{2}$ | ${B_{3}N_{3} }H_{6}$ | LiF | $AlF_{3}$ | |

Answer 1

: $2NaBH_{4} + I_{2} \rightarrow \underset{(X)}{B_{2}H_{6}} + \underset{(Y)}{2NaI} + \underset{(Z)}{H_{2}}$

$2BF_{3} + 6NaH\overset{\quad 450K\quad}{\rightarrow}\underset{(X)}{B_{2}H_{6}} + \underset{(P)}{6NaF}$

$4BF_{3} + 3LiAlH_{4} \rightarrow 2\underset{(X)}{B_{2}H_{6}} + \underset{(Q)}{3LiF} + \underset{(R)}{3AlF_{3}}$