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JEE Main202229 Jul 2022Morning ShiftChemistrys Block ElementsActual

Lithium nitrate and sodium nitrate, when heated separately, respectively, give

Options

  1. ALiNO 2 and NaNO 2
  2. BLi 2 O and Na 2 O
  3. CLi 2 O and NaNO 2
  4. DLiNO 2 and Na 2 O

Correct answer

C. Li 2 O and NaNO 2

Step-by-step solution

Lithium nitrate when heated gives lithium oxide, Li 2 O , whereas other alkali metal nitrates decompose to give the corresponding nitrite. 4 LiNO 3 ⟶ 2 Li 2 O + 4 NO 2 + O 2 2 NaNO 3 ⟶ 2 NaNO 2 + O 2 However, the decomposition product of NaNO 3 are temperature dependent process as shown in the below reaction.

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