What type of reaction is the following. BaCl 2 + Na 2 SO 4 → BaSO 4 + 2 NaCl .

This is an example of double displacement reaction and precipitation reaction. It involves exchange of ions between the reacting substances to form new substances. This reaction occurs in the solution. In the given reaction barium sulphate forms white precipitate.

What type of reaction is the following. BaCl 2 + Na 2 SO 4 → BaSO 4 + 2 NaCl .

This is an example of double displacement reaction and precipitation reaction. It involves exchange of ions between the reacting substances to form new substances. This reaction occurs in the solution. In the given reaction barium sulphate forms white precipitate.

What type of reaction is the following. C 2 H 4 + H 2 → 200 ° C heated nickel powder C 2 H 6 .

This reaction is an example of addition reaction or synthesis reaction or combination reaction which involves addition of two substances to form a new substance. This reaction is also known as hydrogenation reaction. Nickel act as a catalyst.

What type of reaction is the following. CH 4 + Cl 2 → CH 3 Cl + HCl .

This is an example of substitution reaction and it is a chemical reaction in which one functional group in a chemical compound is replaced by another functional group. It is also a displacement reaction.