Table of Contents
- 1 Why concentrated sulphuric acid is not used in preparation of HCl?
- 2 Which of the following is suitable substance for drying HCl?
- 3 Why is concentrated sulphuric acid used instead of concentrated nitric acid?
- 4 Which property of sulphuric acid is used in preparation of HCl?
- 5 What happens if we mix HCl and H2SO4?
- 6 Which is stronger HCl or H2SO4?
Why concentrated sulphuric acid is not used in preparation of HCl?
Concentrated sulphuric acid has a high boiling point (356°C). Hence, it is used for preparing volatile acids like Hydrochloric acid and Nitric acids from their salts by double decomposition.
Which of the following is suitable substance for drying HCl?
Conc. sulphuric acid is used as a drying agent for purifying hydrogen chloride gas.
Can HCl be used in place of h2so4?
HCl and HNO3 are not used in the titration of Mohr’s salt in place of sulfuric acid because: HCl is a mild reducing agent and it reacts with some of the indicator that is KMnO4 solution so the final value of the indicator used come to be more than the actual value disturbing the experiment.
Why HCl gas is passed through conc sulphuric acid while preparation?
Why is chlorine p Answer : Concentrated sulphuric acid is a very effective drying agent. HCl vapours are removed by passing the gas through water, and the traces of water vapour are removed by passing through conc. sulphuric acid.
Why is concentrated sulphuric acid used instead of concentrated nitric acid?
The sulphuric acid is used in the preparation of hydrogen chloride {HCl} and nitric acid {HNO3} because it is a non-volatile{ it has a high boiling point} and HCl and HNO3 are volatile acids.
Which property of sulphuric acid is used in preparation of HCl?
(i) Non-volatile nature of sulphuric acid is responsible to prepare HCl and HNO3 by using H2SO4.
What makes a good drying agent?
2. Calcium sulfate (n=0.5, e=0.004 mg/L) is a neutral and good drying agent….Dry (blue) Wet (wet)
| Class of Compounds | Recommended Drying Agent |
|---|---|
| Aromatic hydrocarbons, ethers | MgSO4, CaCl2, CaSO4, P4O10, Na-metal |
| Aldehydes, ketones, esters | Na2SO4, MgSO4, K2CO3, CaSO4 |
| Alcohols | MgSO4, K2CO3, CaSO4, CaO, BaO |
| Amines | KOH, K2CO3 |
How do you make HCl gas dry?
(i) HCl gas can be dried by passing it over conc. H2SO4, which acts as a powerful dehydrating agent.
What happens if we mix HCl and H2SO4?
Generally, when we add dilute hydrochloric acid to a strong (or concentrated) solution of sulfuric acid, a dehydration reaction takes place. In this reaction, the sulfuric acid strips the hydrochloric acid of its water, effectively converting it to hydrochloric acid gas.
Which is stronger HCl or H2SO4?
HCl is a stronger acid than H2SO4 because a proton more easily separates from chloride ion than from hydrogen sulphate ion and this is reflected in their dissociation constants.
How can HCl be dried?
HCl is dried by passing through CaO .
What is concentrated sulphuric acid used for?
Concentrated sulfuric acid has a very strong affinity for water. It is sometimes used as a drying agent and can be used to dehydrate (chemically remove water from) many compounds, e.g., carbohydrates.