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What happens when ammonia gas is passed through water containing phenolphthalein?
Ammonia gas get dissolved in water which form ammonium hydroxide. NH4OH is alkaline in nature. so when phenolphthalein is added to it. It produce PINK colouration.
How do you separate ammonia and hydrogen?
Ammonia and hydrogen can be separated by a process called catalytic decomposition. The mixture is passed over a catalyst, usually made of nickel, at high temperatures (400-600°C). This causes the ammonia to decompose into nitrogen and hydrogen gas, which can then be collected separately.
What happens when ammonia is passed over hot cupric oxide?
When ammonia is passed over hot cupric oxide, it reacts to form nitrogen gas and water. The reaction can be represented by the equation: 2NH3 + 3CuO → 3Cu + N2 + 3H2O. This reaction is an example of a redox reaction, where both reduction and oxidation occur.
When hydrogen gas passed over heated cupric oxide?
When hydrogen gas passed over heated cupric oxide, the hydrogen is oxidized and displaces copper from the copper oxide as metallic copper, because hydrogen is higher than copper in the electromotive series. Water vapor is also produced by the reaction.
Why a pale blue precipitate of copper hydroxide is formed when ammonia is passed through copper sulphate?
When ammonia is added to a solution of copper sulfate, it forms a complex with the copper ions to produce a pale blue precipitate of copper hydroxide. The complex forms because ammonia acts as a ligand, coordinating with the copper ions to create a stable compound. This reaction is a result of the displacement of the sulfate ions by ammonia in the copper sulfate solution.
Does copper get heated when electric current is passed through?
yes it does
What are the uses of ammonia in a first-aid kit?
Ammonia acts like smelling salts; its pungent odor can be used to wake up someone who has passed out.
Why the water gets heated when current is passed through carbon rods in it?
The carbon rods have electrical resistance. Thisi causes them to heat when current is passed through them. The water gets heated by the carbon rods.
What happens when ammonia gas is passed through water containing phenolphthalein?
Ammonia gas get dissolved in water which form ammonium hydroxide. NH4OH is alkaline in nature. so when phenolphthalein is added to it. It produce PINK colouration.
Why the colour of heated copper powder becomes black when air is passed over it?
When air is passed over heated copper powder, the copper undergoes oxidation, forming copper oxide. Copper oxide is black in color, which is why the heated copper powder appears black when air is passed over it.
How do you separate ammonia and hydrogen?
Ammonia and hydrogen can be separated by a process called catalytic decomposition. The mixture is passed over a catalyst, usually made of nickel, at high temperatures (400-600°C). This causes the ammonia to decompose into nitrogen and hydrogen gas, which can then be collected separately.
When hydrogen gas is passed through heated calcium?
After this reaction calcium hydride (CaH2) is obtained.
What happens when ammonia is passed over hot cupric oxide?
When ammonia is passed over hot cupric oxide, it reacts to form nitrogen gas and water. The reaction can be represented by the equation: 2NH3 + 3CuO → 3Cu + N2 + 3H2O. This reaction is an example of a redox reaction, where both reduction and oxidation occur.
What are smelling salts used for?
Smelling salts, also called "spirits of ammonia", are used to revive someone who has fainted or passed out.
What is a homophone for Happen in history and went by?
past, passed
What happen to the three stooges?
All have since passed.
Where did the word griddle come from?
There was a Latin word Craticula which passed into French as Gredil meaning a flat heated surface
