Question:
When $KI$ is added to acidified solution of sodium nitrite, then
When $KI$ is added to acidified solution of sodium nitrite, then
Updated On: Jun 18, 2022
- $NO$ gas is liberated and $ I_2$ is set free
- $N_2$ gas is liberated and $HI$ is produced
- $N_{2}O$ gas is liberated and $I_{2}$ is set free
- $N_{2}$ gas is liberated and $HOI$ is produced
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The Correct Option is A
Solution and Explanation
When $KI$ is added to acidified solution of sodium nitrite NO gas is liberated and $I _{2}$ is set free.
$2 I ^{-}+4 H ^{+}+2 NO _{2}^{-} \longrightarrow 2 NO + I _{2}+2 H _{2} O$
$2 I ^{-}+4 H ^{+}+2 NO _{2}^{-} \longrightarrow 2 NO + I _{2}+2 H _{2} O$
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Concepts Used:
P-Block Elements
- P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
- P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.
P block elements consist of:
- Group 13 Elements: Boron family
- Group 14 Elements: Carbon family
- Group 15 Elements: Nitrogen family
- Group 16 Elements: Oxygen family
- Group 17 Elements: Fluorine family
- Group 18 Elements: Neon family