Advertisements
Advertisements
प्रश्न
How will you identify?
An amphoteric hydroxide
Advertisements
उत्तर
Zinc hydroxide is an amphoteric hydroxide. It can be identified by treating the salt solution with sodium hydroxide, if a white ppt. is formed and if it gets dissolved in excess of sodium hydroxide then it may be zinc hydroxide.
APPEARS IN
संबंधित प्रश्न
Explain why anhydrous HCl is a poor conductor while aqueous HCl is an excellent conductor.
Write an equation for the reaction of hydrochloric acid on copper oxide.
Name an element which reacts with hydrogen to form a compound which is strongly acidic in water.
How will the action of dilute hydrochloric acid enable you to distinguish between sodium carbonate and sodium sulphite?
Give three distinct test [apart from using an indicator] you would carry out with solution of HCl to illustrate the typical properties of an acid.
Name the following:
A metallic oxide which reacts with hydrochloric acid to give a coloured solution.
What is the property of concentrated sulphuric acid (H2SO4) which allows it to be used in the preparation of hydrogen chloride (HCl) and nitric acid (HNO3)?
Write the balanced equation for the reaction of dilute hydrochloric acid with the following:
Magnesium sulphite
Write an equation for the reactions of hydrochloric acid on manganese (IV) oxide.
A solution of hydrogen chloride in water is prepared. The following substances are added to separate portions of the solution :
| S.NO. | Substances added | Gas evolved | Odour |
| 1. | Calcium carbonate | ______ | ______ |
| 2. | Magnesium ribbon | ______ | ______ |
| 3. | Manganese (IV) oxide with heating | ______ | ______ |
| 4. | Sodium sulphide | ______ | ______ |
Complete the table by writing the gas evolved in each case and its odour.
