~ The most important chemical properties of hydrosulphuric acid are the following: ❋ William McPherson (N/A)
Does dry hydrosulphuric acid react with litmus paper? ❋ William McPherson (N/A)
By passing hydrosulphuric acid into a solution of a mercuric salt it is precipitated as a black powder, insoluble in water and acids. ❋ William McPherson (N/A)
Examples: hydrochloric acid (HCl); hydrosulphuric acid (H_ {2} S). ❋ William McPherson (N/A)
Suppose that hydrosulphuric acid were a liquid, would it be necessary to modify the method of preparation? ❋ William McPherson (N/A)
How many grams of iron sulphide are necessary to prepare 100 l. of hydrosulphuric acid when the laboratory conditions are 17° and 740 mm. ❋ William McPherson (N/A)
_ The elements composing hydrosulphuric acid have each a strong affinity for oxygen, and are not held together very firmly. ❋ William McPherson (N/A)
It is readily prepared in the laboratory as a black precipitate, by the action of hydrosulphuric acid upon soluble lead salts: ❋ William McPherson (N/A)
Can sulphuric acid be used to dry hydrosulphuric acid? ❋ William McPherson (N/A)
Pb. + Fe = FeS + Pb. It is used in the laboratory in the preparation of hydrosulphuric acid: ❋ William McPherson (N/A)
Account for the fact that paints made of zinc oxide are not colored by hydrosulphuric acid. ❋ William McPherson (N/A)
Is the equation for the preparation of hydrosulphuric acid a reversible one? ❋ William McPherson (N/A)
Suppose that the hydrogen in 1 l. of hydrosulphuric acid were liberated; what volume would it occupy, the gases being measured under the same conditions? ❋ William McPherson (N/A)
~ Iron sulphide is a salt of hydrosulphuric acid, and this reaction is therefore similar to the one which takes place when sulphuric acid acts upon a nitrate. ❋ William McPherson (N/A)
This is due to the fact that chromic sulphide, like aluminium sulphide, hydrolyzes in the presence of water, forming chromic hydroxide and hydrosulphuric acid. ❋ William McPherson (N/A)
Thus, when chlorine is passed into a solution containing hydrosulphuric acid, sulphur is precipitated and ❋ William McPherson (N/A)
If the action is allowed to continue until no more hydrosulphuric acid is absorbed, the product is the acid sulphide, sometimes called the hydrosulphide: ❋ William McPherson (N/A)
The insoluble black sulphide (CuS) is easily prepared by the action of hydrosulphuric acid upon a solution of a copper salt: ❋ William McPherson (N/A)
Write the equations representing the reaction between hydrosulphuric acid and sodium hydroxide and ammonium hydroxide respectively. ❋ William McPherson (N/A)
Ammonium sulphide is prepared by the action of hydrosulphuric acid upon ammonium hydroxide: ❋ William McPherson (N/A)
