example laboratory apparatus and their uses

The apparatus used in this method consists of the following component..

Laboratory Preparation of Oxygen - Any of the above mentioned methods could be used to prepare oxygen in the laboratory. Mercuric and silver oxides are not used for the preparation of oxygen, as they are very expensive. For the laboratory preparatio..

In an experiment for verifying Boyle's law the following values of pressures and volumes for a given mass of dry gas at room temperature were observed and tabulated as shown in the tabl..

By treating sodium sulphite or bisulphite with dilute sulphuric acid or hydrochloric acid - The apparatus is set up as shown in figure 7.1. Sodium sulphite or bisulphite is taken in a round bottom flask. Dilute sulphuric or hydrochloric acid is added through the dropping funnel and heated..

For use in the laboratory, ammonia is prepared by heating an ammonium salt with a strong base. It can also be prepared by reacting a metal nitride with water. All ammonium salts heated with alkali evolve ammonia. Ammonium nitrate is not used in laboratory..

Laboratory Preparation of Ammonia - For use in the laboratory, ammonia is prepared by heating an ammonium salt with a strong base. It can also be prepared by reacting a metal nitride with water. All ammonium salts heated with alkali evolve ammonia. Ammonium nitrate is ..

. Note: The following points should be remembered for the laboratory preparation of dihydrogen. Pure zinc is not used in the preparation of dihydrogen because its reaction with sulphuric acid is slow. The presence of some impurities increases the rate of reaction duel the format..

fig 3.13 - Berkley and Hartley's apparatus The apparatus consists of a strong steel vessel into which a porous pot is fitted. The walls of the porous pot are coated with copper ferrocyanide. Due to osmosis water moves into the steel vessel from the porous pot. The water lev..

Also known as Golgi Complex or Golgi Bodies, they consist of tiny, elongated, flattened sacs (cisternae), which are stacked parallel to one another along with some vacuoles and clusters of vesicles. The function of the Golgi Body is to secrete certain hormones and enzymes. It also forms lysos..

Photosynthetic Apparatus - The photosynthetic pigments chlorophylls are present in the leaves because of which the leaves are green in colour and are called the photosynthetic organs. The leaves have the following structure: Histological Details of a Leaf in Cross Section As shown in the ..