On combustion of Li,Na,and K in excess of air | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) When alkali metals are burnt in excess of air,they form different types of oxides depending on their size and polarising power.$Li$ forms the norm

Vedclass · Accepted Answer

$Li_2O, Na_2O_2$ and $KO_2$

Vedclass · Answer

(C) When alkali metals are burnt in excess of air,they form different types of oxides depending on their size and polarising power.$Li$ forms the normal oxide: $4Li + O_2 \rightarrow 2Li_2O$.$Na$ forms the peroxide: $2Na + O_2 \rightarrow Na_2O_2$.$K$ forms the superoxide: $K + O_2 \rightarrow KO_2$.Therefore,the major oxides formed are $Li_2O, Na_2O_2$,and $KO_2$.

On combustion of $Li$,$Na$,and $K$ in excess of air,the major oxides formed,respectively,are:

Similar Questions

Two steel wires of same length $L$ but radii $r$ and $2r$ are connected together end to end and tied to a wall as shown. $A$ force $F$ stretches the combination by $10 \ mm$. How far does the midpoint $A$ move in $mm$?

$\int \frac{dx}{(x+1) \sqrt{4x+3}}$ is equal to

Let a random variable $X$ have a Binomial distribution with mean $8$ and variance $4$. If $P(X \leq 2) = \frac{k}{2^{16}}$,then $k$ is equal to:

Which of the following is not a chromophore?

Which of the following statements is not correct?

Vedclass Test Series

Exam Paper Generator

Online Exam Module