Chalk is calcium carbonate (CaCO3) thus addition of dilute acid will produce carbon dioxide and a calcium salt. E.g. addition of dilute hydrochloric acid will produce CO2 and calcium chloride (CaCl2).
When dilute nitric acid is added to zinc, the gas evolved is nitrogen dioxide (NO2) along with water and zinc nitrate.
When dilute nitric acid and silver nitrate solution are added to sodium chloride solution, a white precipitate of silver chloride is formed. When silver nitrate and hydrochloric acid are added, a white precipitate of silver chloride is also formed.
If the limestone rock fizzes when dilute acid is added, it indicates the presence of calcium carbonate in the rock. When calcium carbonate reacts with acid, it produces carbon dioxide gas, which causes the fizzing.
When sulfur is added to dilute hydrochloric acid (HCl), no gas is typically released because sulfur is a non-reactive element and does not readily react with HCl to produce a gas. Sulfur can only react with strong oxidizing agents, such as concentrated nitric acid or hot concentrated sulfuric acid, to release sulfur dioxide gas.
The nitric acid reacts with other ions that might precipitate with silver nitrate. Doing this first gets these other unwanted precipitates out of the way. If you are testing with Fluoride as your halide remember that silver nitrate does not precipitate with Fluoride, so no precipitate does not mean that halide ions are not present.
When dilute nitric acid is added to zinc, the gas evolved is nitrogen dioxide (NO2) along with water and zinc nitrate.
(Cu)s + 2HNO3 --> Cu2+ + 2NO3- + (H2)gas
the proteins will go away when the sample is added
To dilute a urine sample, you can mix it with distilled water or a diluent solution in a clean container. The amount of diluent added will depend on the desired dilution ratio. Make sure to mix the sample thoroughly before testing.
When dilute nitric acid and silver nitrate solution are added to sodium chloride solution, a white precipitate of silver chloride is formed. When silver nitrate and hydrochloric acid are added, a white precipitate of silver chloride is also formed.
Chlorine will not be seperated out of the sample effluent.
The lead carbonate is dissolved in nitric acid and carbon dioxide is released.
If the limestone rock fizzes when dilute acid is added, it indicates the presence of calcium carbonate in the rock. When calcium carbonate reacts with acid, it produces carbon dioxide gas, which causes the fizzing.
When sulfur is added to dilute hydrochloric acid (HCl), no gas is typically released because sulfur is a non-reactive element and does not readily react with HCl to produce a gas. Sulfur can only react with strong oxidizing agents, such as concentrated nitric acid or hot concentrated sulfuric acid, to release sulfur dioxide gas.
The nitric acid reacts with other ions that might precipitate with silver nitrate. Doing this first gets these other unwanted precipitates out of the way. If you are testing with Fluoride as your halide remember that silver nitrate does not precipitate with Fluoride, so no precipitate does not mean that halide ions are not present.
Try it on your own. (Best answer for your problem is your action)
When mercury is added to nitric acid and heated, it will react to form mercury(II) nitrate along with nitric oxide gas and water. The reaction is exothermic and can be violent if not done carefully as it releases toxic nitrogen dioxide fumes.