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The s-block Elements — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe s-block Elements2 Marks
Question
Account for the following:
  1. $\mathrm{K}_2 \mathrm{CO}_3$ cannot be prepared by Solvay process.
  2. Alkali metals are not found in nature in free state.
✓

Answer

a. It is because $\mathrm{KHCO}_3$ is highly soluble in water, therefore, it cannot be precipitated and cannot be changed to $\mathrm{K}_2 \mathrm{CO}_3$ on heating.
b. It is because alkali metals are highly reactive, so, they are found in combined state.

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