Easy MCQ +4 / -1 PYQ · JEE Mains 2021

What are the products formed in sequence when excess of CO2 is passed in slaked lime?

  1. A Ca(HCO<sub>3</sub>)<sub>2</sub>, CaCO<sub>3</sub>
  2. B CaCO<sub>3</sub>, Ca(HCO<sub>3</sub>)<sub>2</sub> Correct answer
  3. C CaO, Ca(HCO<sub>3</sub>)<sub>2</sub>
  4. D CaO, CaCO<sub>3</sub>

Solution

$Ca{(OH)_2} + C{O_2} \to CaC{O_3} \downarrow + {H_2}O$<br><br>$CaC{O_3} \downarrow + C{O_2} + {H_2}O \to Ca{(HC{O_3})_2}$

About this question

Subject: Chemistry · Chapter: s-Block Elements · Topic: Alkali Metals

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