Question:

Which of the following acts as an oxidising as well as reducing agent?

Updated On: Jul 12, 2022
  • $ N{{a}_{2}}O $
  • $ N{{a}_{2}}{{O}_{2}} $
  • $ NaN{{O}_{3}} $
  • $ NaN{{O}_{2}} $
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The Correct Option is D

Solution and Explanation

$ NaN{{O}_{2}} $ (sodium nitrite) act both as oxidising as well as reducing agent because in it N-atom is in $ +3 $ oxidation state (intermediate oxidation state). Oxidising property: $2NaNO_2 + 2KI + 2H_2SO_4 \to Na_2SO_4$ $ + K_2SO_4 + 2NO + 2H_2O + I_2$ Reducing property : $H_2O_2 + NaNO_2 \to NaNO_3 + H_2O$
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Notes on The solid state

Concepts Used:

Solid State

Solids are substances that are featured by a definite shape, volume, and high density. In the solid-state, the composed particles are arranged in several manners. Solid-state, in simple terms, means "no moving parts." Thus solid-state electronic devices are the ones inclusive of solid components that don’t change their position. Solid is a state of matter where the composed particles are arranged close to each other. The composed particles can be either atoms, molecules, or ions. 

Solid State

Types of Solids:

Based on the nature of the order that is present in the arrangement of their constituent particles solids can be divided into two types;

  • Amorphous solids behave the same as super cool liquids due to the arrangement of constituent particles in short-range order. They are isotropic and have a broad melting point (range is about greater than 5°C).
  • Crystalline solids have a fixed shape and the constituent particles are arranged in a long-range order.