Table of Contents
- 1 Why can calcium oxide not be used as a drying agent in the laboratory preparation of hydrogen chloride gas?
- 2 What is used for drying of ammonia?
- 3 What makes a good drying agent?
- 4 Which one of the following is used for drying ammonia?
- 5 Can calcium oxide be used to dry ammonia gasquicklime?
- 6 Can phosphorus pentoxide and calcium oxide be used to dry hydrogen chloride gas?
Why can calcium oxide not be used as a drying agent in the laboratory preparation of hydrogen chloride gas?
Phosphorous pentoxide and CaO cannot be used to dry HCl because they react with HCl.
Why is CACl2 not used for drying nh3?
In the laboratory preparation of ammonia H2SO4, P2O5 or CACl2 is not used because they chemically react with ammonia to give ammonium sulphate [(NH4)2SO4], [2(NH4)3PO4] and[CaCl2.
What is used for drying of ammonia?
Calcium oxide (CaO) is used as drying agent in the preparation of Ammonia in laboratory.
How is nh3 gas dry?
The moisture present in ammonia is removed by passing it through a glass tower packed with quick lime, CaO. For drying of ammonia gas, the common dehydrating agents like conc. H2SO4 or anhydrous calcium chloride or phosphorus pentoxide can’t be used as these react with ammonia.
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 |
What is the drying agent for hydrogen gas?
sulphuric acid
Hence, concentrated sulphuric acid is the drying agent used for purifying hydrogen chloride gas.
Which one of the following is used for drying ammonia?
Why ammonia is not drying over P2O5?
Why is P2O5 not used for drying ammonia gas? Ammonia is a basic compound. P2O5 is an acidic oxide. So P2O5 is not used for drying ammonia gas.
Can calcium oxide be used to dry ammonia gasquicklime?
So in final it can be said that for drying ammonia gasquicklime are calcium oxide can be used and in the same way for drying HCL or Hydrogen chloride or hydrochloric acid gas the calcium oxide dry powder can be used or dry calcium chloride (cacl2) can be used. Also calcium chloride is a deliquescent substance. What does Google know about me?
What is the best drying agent for NH3?
Calcium oxide is the best drying agent for NH3. Other drying agents like calcium chloride, concentrated sulphuric acid and fused phosphorus pentoxide react/ or form direct addition products with ammonia gas, hence they cannot be used.
Can phosphorus pentoxide and calcium oxide be used to dry hydrogen chloride gas?
Phosphorus pentoxide and calcium oxide are good drying agents, but they cannot be used to dry hydrogen chloride gas. Why? Yes the above question is a right question Because the phosphorus pentoxide and calcium oxide are good drying agents but they can be used to dry HCL gas because they react with dry HCL gas and form their respective compounds.
What type of salt is used to dry HCl gas?
Instead for drying or dehydration of dry HCL gas we use the salt of calcium which is calcium chloride the calcium salt of hydrochloric acid or Hydrogen chloride or HCL or muratic acid. This salt is also known as muratate of lime or quicklime or calcium oxide (cao).