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Carbon and its Compounds — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceCarbon and its Compounds3 Marks
Question
Complete the following reactions:
  1. $\text{CH}_3\text{COOH}\ +\ \text{NaOH}\xrightarrow{\ \ \ \ \ \ \ \ \ \ }$
  2.  
  1. $\text{CH}_3\text{OH}\ +\ \text{O}_2\xrightarrow[\text{MoO}_3]{\ \ \ \ 873-923\text{K}\ \ \ \ }$
  2. $\text{CH}_2=\text{CH}_2\ +\ \text{Br}\xrightarrow{\ \ \ \ \ \ \ \ \ \ }$
  3. $\text{CH}_3\text{COOC}_2\text{H}_5\ +\ \text{NaOH}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ }$
  4. $\text{CH}_2=\text{CH}_2\ +\ \text{H}_2\text{O}\xrightarrow{ \ \ \ \text{H}_2\text{SO}_4\ \ \ }$
✓

Answer

  1. This is an example of neutralization reaction,
$\text{CH}_3\text{COOH}\ +\ \text{NaOH}\xrightarrow{\ \ \ \ \ \ \ \ \ \ }\text{CH}_3\text{COONa}\ +\ \text{H}_2\text{O}$
  1.  
  2. Alcohols will get oxidised to acids in the presence of $MoO _3$ which is an oxidising agent. In this case, methanol $\left( CH _3 OH \right)$ gets oxidised to methanoic acid $( HCOOH )$.
$\text{CH}_3\text{OH}\ +\ \text{O}_2\xrightarrow[\text{MoO}_3]{\ \ \ 873-923\text{K}\ \ \ \ }\text{HCOOH}$
  1. $\text{CH}_2=\text{CH}_2\ +\ \text{BR}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ }\text{CH}_2\text{Br}-\text{CH}_2\text{Br}$
This is an example of addition reaction.
  1. $\text{CH}_3\text{COOC}_2\text{H}_5\ +\ \text{NaOH}\xrightarrow{\ \ \ \ \ \ \ \ \ \ }\text{CH}_3\text{COOH}\ +\ \text{C}_2\text{H}_5\text{OH}$
This is an example of saponification reaction and is used in the preparation of soaps.
  1. $\text{CH}_2=\text{CH}_2\ +\ \text{H}_2\text{O}\xrightarrow{ \ \ \ \ \text{H}_2\text{SO}_4\ \ \ }\text{CH}_3-\text{CH}_2-\text{OH}$
This is an addition reaction, where $H ^{+}$is added to one of the carbon and $OH ^{-}$is added to the other carbon.

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