In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?

The following reaction is used for the preparation of oxygen gas in the laboratory:

Which of the following statements (s) is/are correct about the reaction?

Which one of the following processes involve chemical reactions?

Which of the following are combination reactions?

Write the balanced chemical equations for the following reactions and identify the type of reaction in each case.

(a) Nitrogen gas is treated with hydrogen gas in the presence of a catalyst at 773 K to form ammonia gas.

(b) Sodium hydroxide solution is treated with acetic acid to form sodium acetate and water.

(c) Ethanol is warmed with ethanoic acid to form ethyl acetate in the presence of concentrated H₂SO₄.

(d) Ethane is burnt in the presence of oxygen to form carbon dioxide, water and releases heat and light.

Chemical Reactions and Equations