0
What else can I help you with?
Why hydrogen cannot be collected over air?
Hydrogen is highly soluble in air. You won't be able to collect it it over air. Hence other methods are preferred
Why the hydrogen gas collected from the reaction of the metal with acid is called wet hydrogen gas?
Wet hydrogen is collected over a water surface.
Why the hydrogen gas collected from the reaction of the metal with acid is referred to as wet hydrogen gas?
It is called wet hydrogen gas because it is collected over water.
What ions are present in water that has run over limestone?
When water runs over limestone in the presence of carbon dioxide, calcium ions and hydrogen carbonate ions pass into the water. CaCO3 + H2O + CO2 = Ca(HCO3)2 Water also self ionizes so there will also be hydrated hydrogen ions and hydroxide ions.
Can you collect ammonia over water?
Not very efficiently, because ammonia dissolves so easily in water due to compatible intermolecular attractions between ammonia and water.
Why is hydrogen chloride not collected over water?
Hydrogen chloride is soluble in water, so attempting to collect it over water would result in a significant amount of the gas being lost as it goes into an aqueous solution that will soon become dangerously acidic.
Can you collect hydrogen gas over water?
Yes, hydrogen gas can be collected over water by displacing the water in a container with the gas. Hydrogen is less dense than air so it will displace the water, allowing the gas to be collected in the container while the water is pushed out.
Can distilled water be electrolysed?
Yes, distilled water can be electrolysed. Water always contains a few hydrated hydrogen ions and hydroxide ions from self ionization. There can also be some chloride ions because hydrogen chloride can distil over with water. However, the concentration of ions is extremely low so electrolysis is very slow.
Why hydrogen cannot be collected over air?
Hydrogen is highly soluble in air. You won't be able to collect it it over air. Hence other methods are preferred
How do you collect evaporated water?
A piece of plastic over a boiling kettle will collect the steam (evaporated water) and it will condense.
What happens when hydrochloric acid and calcium react?
2HCl + Ca give CaCl2 + H2 and lots of heat. It may explode. That is, hydrochloric acid and calcium give Calcium Chloride and hydrogen gas and heat. In practice, it would give Calcium ions and Chloride ions in solution. If you had exactly the right amount of each, you could then evaporate the water and have calcium chloride salt left over. The hydrogen bubbles out and is gone into the air (and eventually into space, lost to earth forever.) You could burn the hydrogen coming off, which would yield more water.
What temperature will water and sodium chloride separate?
At any temperature over 0 0C water is evaporated and sodium chloride remain as crystals.
What happens to water when calcium chloride is added to water?
The calcium chloride will completely dissociate when it enters the water, resulting in calcium and chloride ions floating throughout the water. The hydrogen bonds between the individual water molecules will become disrupted, resulting in a dipole-ion force between either the hydrogen dipole and the chloride ion or the oxygen dipole and the calcium ion. Because a dipole-ion intermolecular force is stronger than a hydrogen bond force, the solution will require more heat energy to be added to liberate the water molecules from the solution and cause a phase change from liquid to gas. The same is true for freezing - because the dipole-ion intermolecular forces are stronger, the typical hydrogen bonds that would form and create a stable lattice structure cannot form as easily and you have to remove a greater proportion of heat energy from the solution to cause a phase change from liquid to solid.
How do you collect gas by displacement of water?
To collect a gas by displacement of water, you can set up a vessel filled with water and invert it over a container of the gas being generated. As the gas displaces the water, the water level in the vessel will decrease, allowing you to collect the gas in the inverted vessel. This method takes advantage of the fact that gases are typically less dense than water.
What is the chemical formula for hydrogen oxide and show your working?
Hydrogen has a valencey of 1 oxygen has a valencey of 2 H1O2 cross nums over H20 another eg Chlorine has valencey of 2 hydrogen 1 CL2H1 CLH2(hydrogen chloride or hydrochloric acid)
Which gas may be collected over water?
No, only those that do not dissolve in water, or they will dissolve in the water rather than bubble through it to be collected. Examples of gases that can be collected over water include:- Hydrogen, nitrogen, oxygen (only slightly soluble), methane, carbon monoxide. Examples of gases that can just be collected over water (quie soluble - so much will be dissolved in the water as well):- Nitrogen dioxide, carbon dioxide, chlorine Examples of gases that are too soluble to be collected over water:- hydrogen chloride, ammonia (which is the most soluble of all gases) Both of these gases are collected by displacement of air - hydrogen chloride by the gas jar being held as in a glass - with the base on the table - because it is heavier than air (chlorine and carbod dioxide can be collected like this too) and and ammonia by the gas jar being held upside down to trap the ammonia (as it is lighter than air).
Why the hydrogen gas collected from the reaction of the metal with acid is called wet hydrogen gas?
Wet hydrogen is collected over a water surface.
