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

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe s-block Elements3 Marks
Question
  1. How is $BeCl_2$ prepared? Write chemical equation.
  2. How is $MgCl_2.6H_2O$ converted into anhydrous $MgCl_2$​​​​​​​​​​​​​​?
✓

Answer

  1. $\text{BeO}+\text{C}+\text{Cl}_2\xrightarrow{\text{Heat}}\text{BeCl}_2+\text{CO}$
$BeCl_2$ is prepared by heated Beo with $Cl_2$​​​​​​​ and C. It is not prepared in aqueous solution because it will get hydrolysed.
  1. It is done with the help of HCl(g) which is dehydrating agent.
$\text{MgCl}_2.6\text{H}_2\text{O}\xrightarrow{\text{HCl}(g)}\text{MgCl}_2+6\text{H}_2\text{O}$

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