Eduprobe

Question:

The correct statements among (a) to (d) are:
(a) saline hydrides produce H2 gas when reacted with H2O.
(b) Reaction of LiAlH4 with BF3 leads to B2H6.
(c) PH3 and CH4 are electron-rich and electron-precise hydrides, respectively.
(d) HF and CH4 are called as molecular hydrides.

(a), (b), (c) and (d)

(a), (c) and (d) only

(a), (b) and (c) only

Solution:

Correct option is C.
(a) M⁻H⁺ + H₂O → MOH + H₂
Ionic hydride/saline hydride
(b) 4BF₃ + 3LiAlH₄ → 2B₂H₆ + 3LiF + 3AlF₃
(c) Ref, image
(d) HF and CH₄ are molecular hydrides because they are covalent molecules.

Question:

The correct statements among (a) to (d) are:(a) saline hydrides produce H2 gas when reacted with H2O.(b) Reaction of LiAlH4 with BF3 leads to B2H6.(c) PH3 and CH4 are electron-rich and electron-precise hydrides, respectively.(d) HF and CH4 are called as molecular hydrides.

Solution:

The correct statements among (a) to (d) are:
(a) saline hydrides produce H2 gas when reacted with H2O.
(b) Reaction of LiAlH4 with BF3 leads to B2H6.
(c) PH3 and CH4 are electron-rich and electron-precise hydrides, respectively.
(d) HF and CH4 are called as molecular hydrides.