Fundamentholfundamenthol
JEE Main2019Chemistry
Q.

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. 

  1. A

    (a), (c) and (d) only. 

  2. B

    (c) and (d) only.

  3. C

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

  4. D

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

Solution

– With water saline hydrides produce H2 gas

– 3LiAlH4 + 4BF3 2B2H6 + 3LiF + 3AlF3

– PH3 is electron rich while CH4 is electron precise hydride

– HF and CH4 are molecular hydrides

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