Download App

Acids, Bases and Salts — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceAcids, Bases and Salts3 Marks
Question
Write the name and molecular formula of an organic compound having its name suffixed with 'ol' and having two carbon atoms in its molecule. Write balanced chemical equation to indicate what happens when this compound is heated with excess conc. H2SO4 and the name of main product formed. Also state the role of conc. H2SO4 in the reaction.
✓

Answer

Molecular formula: CH3-CH2-OH and name: Ethanol.

When it is heated with an excess of conc. Sulphuric acid elimination of water molecule takes place to give ethane.

$\text{C}_2\text{H}_5\text{OH}+\text{H}_2\text{SO}_4\xrightarrow{\Delta}\text{CH}_2 = \text{CH}_2+\text{H}_2\text{O}+\text{H}_2\text{SO}_4$

Role of conc. H2SO4-dehydrating agent.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Answer the questions.[Che-3M]" from Acids, Bases and Salts→Acids, Bases and Salts — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

Explain why, methanol is much more dangerous to drink than ethanol.
→
Define the following in terms of gain or loss of hydrogen with one example:
  1. Oxidation.
  2. Reduction.
→
What is black gold and how is it formed?
→
Zinc liberates hydrogen gas when reacted with dilute hydrochloric acid, whereas copper does not. Explain why?
→
Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of nitrogen, N, is formed from two nitrogen atoms. What name is given to this type of bonding? (Atomic number of nitrogen is 7)
→
Intake of small quantity of methanol can be lethal. Comment.
→
Name three products of the chlor-alkali process. State two uses of each product.
→
A sulphate salt of Group 2 element of the Periodic Table is a white, soft substance, which can be moulded into different shapes by making its dough. When this compound is left in open for some time, it becomes a solid mass and cannot be used for moulding purposes. Identify the sulphate salt and why does it show such a behaviour? Give the reaction involved.
→
What happens when an acid reacts with a base? Explain by taking the example of hydrochloric acid and sodium hydroxide. Give equation of the chemical reaction which takes place. What is the special name of such a reaction?
→
Explain the following terms with one example each:
  1. Corrosion.
  2. Rancidity.
→