Wiki User
∙ 9y agoWhen sulphuric acid is added to zinc granules , the gas produced is hydrogen gas. Zinc displaces hydrogen from sulphuric acid.
Wiki User
∙ 9y agothe test tube which holds the zinc becomes hot , the zinc turns into zinc chloride and hydrogen gas is produced. It is a chemical change.
The reactions between metals and acids are always endothermic.
CuO + H2SO4 -> CuSO4 + H2O copper sulfate and water produced
Copper sulphate + water
Iron + sulphuric acid ----> iron sulphate + hydrogen
the test tube which holds the zinc becomes hot , the zinc turns into zinc chloride and hydrogen gas is produced. It is a chemical change.
The reactions between metals and acids are always endothermic.
CuO + H2SO4 -> CuSO4 + H2O copper sulfate and water produced
ironchloride and sulphuric acid
Copper sulphate + water
Iron + sulphuric acid ----> iron sulphate + hydrogen
cu + H2so4 --->cuso4+2H two molecules of hydrogen evolves........
Hydrogen gas.
coz when we dilute zinc granules are reacted with dilute HCl (hydrochloric acid), zinc chloride i.e. ZnCl2 is formed along with the evolution of hydrogen gas H2. the presence of hydrogen gas can be tested by bringing a naked flame to the mouth of the test tube. Hydrogen gas burns with a pop sound.
the ammonium salt produced by a neutralization process, by reacting the ammonium hydroxide with dilute sulphuric acid. the amount of ammonia added into the sulphuric acid is enough when the amniotic smell produced. drop the ammonia little by little. then, heat while stir the mixture until the solution becomes 1/3 of the original volume. lastly, to obtain the salt, the filtration process should be done after the solution is cool.
The gaseous product in this reaction is 'hydrogen' and the salt is zinc sulfate.
the ammonium salt produced by a neutralization process, by reacting the ammonium hydroxide with dilute sulphuric acid. the amount of ammonia added into the sulphuric acid is enough when the amniotic smell produced. drop the ammonia little by little. then, heat while stir the mixture until the solution becomes 1/3 of the original volume. lastly, to obtain the salt, the filtration process should be done after the solution is cool.