Question

Consider the reaction, $LiH+Al{H}_3\to .....$
Which is the incorrect statement about this reaction?

• A. The product is a good reducing agent
• B. $Al{H}_3$ acts as a lewis acid
• C. There is decrease in the oxidation number of aluminium in the product
• D. $LiH$ donates $H^{-}$ to $Al{H}_3$

Answer 1

The correct option is C There is decrease in the oxidation number of aluminium in the product

There is no change in the oxidation state of Aluminium during the reaction

The reaction is as follow:

$LiH+Al{H}_3\to LiAl{H}_4$

The oxidation state of Al in both reactant as well as in product is -3.