Table of Contents
- 1 Why is CaO used as drying agent for ammonia?
- 2 Why CaO is used as a drying agent?
- 3 When ammonia is heated with cupric oxide a molecule of ammonia will?
- 4 Why p2o5 is not used as a drying agent for ammonia?
- 5 Why is ammonia passed through calcium oxide?
- 6 Why does calcium not react with ammonia?
- 7 Is MgO a better acid than ZnO or PbO?
- 8 What is the decomposition temperature of MgCO3 at low temperature?
Why is CaO used as drying agent for ammonia?
Ammonia can be easily dried by passing over fresh quicklime or soda lime (granules of calcium oxide and sodium hydroxide) because it is basic in nature and doesn’t react with ammonia. So, the answer is option ‘C’. Additional information: Ammonia is a very commercially important chemical.
Why CaO is used as a drying agent?
Calcium oxide (CaO) compound is used as a drying agent. Drying agent is used to remove water form an organic compound. Calcium oxide is used to dry ammonia gas. When Limestone (CaCO3) is heated, it gives Calcium oxide….Detailed Solution.
| Compound | Chemical Formula |
|---|---|
| Gypsum | CaSO4 .2H2O |
Can CaO act as drying agent?
One such application occurs when water is added to dry…
Does ammonia react with calcium oxide?
Calcium oxide will react with ammonium chloride to produce ammonia gas, water vapor and calcium chloride.
When ammonia is heated with cupric oxide a molecule of ammonia will?
When ammonia is heated with cupric oxide, a molecule of ammonia will lose 3 electrons.
Why p2o5 is not used as a drying agent for ammonia?
The drying agent used is CaO in case of ammonia. Other drying agents like P2O5 and CaCl2 are not used. As ammonia being basic reacts with them.
Why is calcium used in drying agents?
Calcium chloride in its anhydrous form is an economical drying agent and very important for drying processes in laboratories. Those are for example: drying of liquids and neutral gases. Calcium chloride has a drying capacity up to 98\%. It binds the water through crystallization and can be regenerated by warming.
Which is used as drying agent?
In those cases, drying agents like calcium hydride (CaH2), sodium metal (in combination with benzophenone) or lithium aluminum hydride (LiAlH4) are used to chemically destroy the water in the solvent….Dry (blue) Wet (wet)
| Class of Compounds | Recommended Drying Agent |
|---|---|
| Alkane, alkyl halides | MgSO4, CaCl2, CaSO4, H2SO4, P4O10 |
Why is ammonia passed through calcium oxide?
The calcium oxide will absorb the water produced in the reaction and ensure that the ammonia gas is dry. Gently warm the reaction mixture. Collect a test tube which contains a few drops of concentrated hydrochloric acid. This is because ammonia is less dense than air.
Why does calcium not react with ammonia?
Aqueous ammonia is a weak alkali. It partially ionizes in aqueous solution to form low concentration of hydroxide ions. Since concentration of hydroxide ions is low, calcium hydroxide remains soluble. Hence, no precipitate is formed.
Which reagent is not used in NH3?
Which of the following basic radicals will be precipitated by H2S gas in the presence of NH3?
What is the chemical reaction between MgO and Cao?
The other answers are correct, however, it is even worse for MgO than what those answers would suggest. When producing CaO and MgO industrially, they are calcined from their respective limestones. MgCO3 starts to decompose around 740 °C and CaCO3 closer to 950 °C.
Is MgO a better acid than ZnO or PbO?
By looking at MgO we can say it is better acid than other because better overlap of o and mg orbitals (both are in same period) that leads to stable MgO ,not easily donate o2- . In case of ZnO and PbO , overlap of oxide to metal orbital are poor because of large size difference .
What is the decomposition temperature of MgCO3 at low temperature?
MgCO3 starts to decompose around 740 °C and CaCO3 closer to 950 °C. At the lower calcination temperature, MgCO3 doesn’t decompose very fast, so it is usually heated up to a much higher temperature.