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Hydrocarbons — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryHydrocarbons3 Marks
Question
Give the reactions involved in the preparation of propane from the following:
  1. $\text{CH}_3-\text{CH}=\text{CH}_2$
  2. $\text{CH}_3-\text{CH}_2-\text{CH}_2\text{Cl}$
  3. $\text{CH}_3\text{CH}_2\text{CH}_2\text{COO}^-\text{Na}^+$
✓

Answer

  1. $\text{CH}_3-\text{CH}=\text{CH}_2+\text{H}_2\xrightarrow{\text{Pd/pt/Ni}}\text{CH}_3-\text{CH}_2-\text{CH}_3\\ \ \ \ \ \ \ \ \ \ \ \ _{\text{Propene}} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ _{\text{Propane}}$
  2. $\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{Cl}+2[\text{H}]\xrightarrow{\text{Zn/HCl}}\text{CH}_3\text{CH}_2\text{CH}_3+\text{HCl}$
  3. $\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{COO}^-\text{Na}^++\text{NaOH(CaO)}\\\xrightarrow{\text{heat}}\text{CH}_3-\text{CH}_2-\text{CH}_3+\text{Na}_2\text{CO}_3$

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