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Because of two facts ;-
#1 Hydrogen is the least massive (lightest) element, and will diffuse into the atmosphere very easily.
#2; Hydrogen is an inflammable gas, so it needs to be kept away from flames/sparks etc., otherwise it will 'explode.'
What else can I help you with?
Why methane is collected by downward displacement?
Methane is not soluble in water and the density is also lower.
Can oxygen be collected by the downward displacement of water?
Hydrogen can be collected by the downward displacement of water because of two reasons: it is less dense than water, and so rises to the surface, and it is not very soluble in water, and so nearly all the gas can be collected because very little is dissolved in the water.
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 can't chlorine gas be collected by the method of water displacement?
because it is highly soluble in water
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.
Can carbon monoxide gas collected by downward displacement of water?
No, carbon monoxide gas cannot be collected by downward displacement of water because it is less dense than water and will not displace the water. A gas that is less dense than water will not be trapped within the water, causing it to simply rise to the surface.
Why methane is collected by downward displacement?
Methane is not soluble in water and the density is also lower.
How is ammonia gas collected in the laboratory preparation of ammonia gas?
Ammonia gas is collected by upward displacement of air in the laboratory preparation. This involves passing the gas over water and collecting it by downward displacement because ammonia is lighter than air. The gas is then bubbled through water to dissolve any remaining gas before use.
Can oxygen be collected by the downward displacement of water?
Hydrogen can be collected by the downward displacement of water because of two reasons: it is less dense than water, and so rises to the surface, and it is not very soluble in water, and so nearly all the gas can be collected because very little is dissolved in the water.
What is the method used to collect a gas?
Gas can be collected using various methods such as downward displacement of water, over water displacement, or through absorption into a liquid. The choice of method depends on the physical and chemical properties of the gas being collected.
Gas collected by displacement of water?
Gas can be collected by displacement of water using the principle that gases are less dense than water. The gas is generated in a reaction and displaces the water in a container, causing the gas to rise and be collected in an inverted vessel. This method allows for the collection and measurement of the gas produced in the reaction.
What is upward displacement and downward displacement of water?
Upward displacement of water occurs when an object is placed in water, causing the water level to rise. Downward displacement of water occurs when an object is submerged into water, causing the water level to drop.
How can chlorine gas be collected?
Chlorine gas can be collected by the downward displacement of air method. This involves bubbling chlorine gas through a solution, usually of water, causing the gas to displace the air in the container and collect in the top of the container. The chlorine gas can then be collected by carefully pouring or siphoning it out.
How do you collect ammonia gas?
Ammonia gas can be collected by the downward displacement of air because it is lighter than air. It can also be collected by the upward displacement of air because it is water soluble and less dense than air. Additionally, it can be collected using a gas syringe or gas-collecting bottle attached to the reaction vessel where ammonia is being generated.
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.
What does displacement of hydrogen mean?
Displacement of hydrogen refers to a chemical reaction where hydrogen is replaced by another element or compound. This can occur through various reactions such as single displacement or redox reactions, resulting in the displacement of hydrogen from its compound.
Why can't chlorine gas be collected by the method of water displacement?
because it is highly soluble in water
