Hydrogenation of Alkynes

Q. What is hydrogenation?

Q.

In the hydrogenation of vegetable oils, the unsaturated hydrocarbons generally add hydrogen in the presence of:

1. Nickel

2. Copper

3. Sunlight

4. Oxygen

Q. Complete the following reaction:
$\mathrm{CH}\equiv \mathrm{CH}\underset{{\mathrm{HgSO}}_4+H_2{\mathrm{SO}}_4}{\overset{H_{2}O,333K}{\to }}$$\stackrel{\mathrm{tautomerism}}{\rightleftharpoons }$

1. ${\mathrm{CH}}_3\mathrm{CHO}$
2. ${\mathrm{CH}}_3\mathrm{COOH}$
3. ${\mathrm{CH}}_2=\mathrm{CH}-\mathrm{OH}$
4. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}$

Q. Write balanced equations to show the preparation of the following:
(i) ethane from sodium propionate
(ii) ethene from ethanol
(iii) ethyne from calcium carbide
(iv) ethanoic acid from ethane

Q.

How to complete the Equations.

Mg + CH₂(COOH)_{2 --------- _____________ + __________}

Q. Write the balanced equations to convert:
(a) ethanol to ethene.
(b) ethene to ethanol.

Q. Complete the following equations
C₂H_{​​​​4}+H₂O -
CH₃COOH+CH₃OH -

Q. $A{l}_4{C}_3$ on hydrolysis gives $X$ gas. How many $H$ atoms are present in $X$ molecule?

Q. Statement 1: Electrolysis of water requires the input of energy.
Statement 2: The products formed, $H_2$ and $O_2$, possess more chemical potential energy than $H_{2}O$.

1. Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1.
2. Both Statement 1 and Statement 2 are correct, but Statement 2 is NOT the correct explanation of Statement 1.
3. Statement 1 is correct, but Statement 2 is not correct.
4. Statement 1 is not correct, but Statement 2 is correct.

Q. Hydrogenation of ethene is example of 1st order reaction. All hydrogenation of alkene is example of 1st order reaction or only ethene

Q.

What is hydrogenation? What is its industrial application?