How sodium carbonate is prepared in the laboratory? Write the reaction involved in the process.

How diborane is prepared in the laboratory?

How potassium permanganate is prepared in the laboratory?

How sodium hydroxide prepared?

How pure N_2 gas is prepared in laboratory? Write the necessary equation for the reaction.

How is nitrogen prepared in the laboratory? Write the chemical equations of the reactions involved.

How gold ornaments are cleaned by aqua re-gia? Write the reactions involved in it.

What will happen if a solution of sodium hydrogencarbonte is heated ? Give the equation of the reaction involved.

Write the preparation of XeF_2 ?

How ethanol is prepared from molasses? Write the various reactions involved?

How is plaster of paris prepared?