Question

Please fast answers ​

Answer 1

Answer:

Q.1 Substance x is calcium oxide and substances y is calcium hydroxide, it can be represented by the following chemical equation :-

CaO + H2O --> Ca(OH)2

CA(OH)2 + CO2 --> CaCo3

Q.2 we can determine if a chemical reaction has taken place by the following factors :-

1. change in temperature.

2. change in colour.

3. change in state.

4. evolution of gas

5. formation of precipitate.

Q.3 Oxygen Gas evolves on anode

Q.4 Turbid Yellow gas is found to evolve when we heat lead nitrate.

Q.5 the chemical equation for photosynthesis is :-

C6H12O6(aq) + 602(aq) --> 6CO2(aq) + 6H20 (L) + energy

Q.6 Catalyst is any substance or component which boosts the reaction of a specific element or compound. for examples, enzymes is a catalyst found in human body which boosts the synthesis of proteins, fats and carbohydrates.