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copper doesn't displace hydrogen from acids
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What method is used to separate copper from copper sulphate solution?
By heating copper sulfate is decomposed in copper(II) oxide and sulfur trioxide; by reduction of the copper oxide with hydrogen copper is obtained.
What amount of NaOH is required to prepare 1N NaOH solution and why only that amount is used?
40 grams, this is the 1M NaOH standard laboratory solution.
Why concentrated nitric acid is not used to prepare hydrogen gas?
Usually an active metal displaces hydrogen acids. But Nitric Acid is a very strong oxidizing agent i.e. it leads to addition of oxygen to another substancevery quickly . Thus, when hydrogen is formed due to the addition of a metal to nitric acid, it oxidises hydrogen into water. That is why concentrated nitric acid is not used in the preparation of hydrogen gas.
Why is Cu used for copper?
Cu is used for copper as it is an abbreviation of the Latin word for copper, which is Cuprum.
How is copper used in fireworks?
Copper is used for puting all the colours in fireworks.
Can copper be used to prepare hydrogen by reaction with diluteacids?
No. Copper is below hydrogen in the electromotive series and therefore can not displace hydrogen from its compounds.
Can copper be used be to prepare hydrogen by reaction with dilute acids?
No, this would not be a good way. Copper is very unreactive towards dilute acids.
Why is the reaction between potassium and dilute acids not used to prepare hydrogen in the laboratory?
Because they have a more efficient way of doing it.
Is copper wire a substance?
Copper used in wiring would not qualify as laboratory-grade (pure). It would be too expensive to manufacture.
What type of gases are used to prepare Ammonia gas?
Nitrogen and hydrogen
Is copper wire a pure substance?
No. Copper used in wiring would not qualify as laboratory-grade (pure). It would be far too expensive to manufacture and would not improve the conductivity enough to make a difference. Some copper wire is even plated. Laboratory-grade (pure) copper is a single substance, the element copper.
Why does sulphuric acid have to be warm to be used in the copper oxide reaction?
Because copper isn't reactive enough to displace hydrogen if the solution is cool or cold. It becomes easier for copper to replace the hydrogen when the solution is warm.
What method is used to separate copper from copper sulphate solution?
By heating copper sulfate is decomposed in copper(II) oxide and sulfur trioxide; by reduction of the copper oxide with hydrogen copper is obtained.
Why don't we make hydrogen when reacting an acid with copper?
Copper is unreactive and will not react with acids to liberate hydrogen gas. However it may react if concentrated and oxidising acids are used.
Name the instrument used in the laboratory which can split water into the hydrogen and oxygen gases?
An apparatus for electrolysis
What is a colorless liquid used as a antiseptic bleaching agent and laboratory reagent?
Hydrogen peroxide solution.
What is the instrument used in the laboratory which can split water into hydrogen and oxygen?
There are different types of equipment used to separate water into hydrogen and oxygen, but the most common, in my experience, is the "Hoffman Electrolysis Apparatus".
