Question

Write a chemical equation for
1) Change in state
2) Change in colour​

Answer 1

Answer:

Chemical equation for change in state:

NH3 (g) + HCl (g) => NH4Cl (s)

Chemical equation for change in colour:

CuSO4 + Fe => FeSO4 + Cu

(Blue) ( Green)

What is a chemical equation ?

A chemical equation represents the reactants which reacts with each other to form some products chemically.

Examples are:

• Burning of magnesium ribbon
• Burning of natural gas

The following helps in the determination of whether a chemical reaction has taken place:

• Change in state
• Change in temperature
• Evolution of gas
• Change in colour
• Precipitation occurs

Answer 2

$\huge\tt\red{Change\:In\:State}$

NH3+HCl------>NH4Cl

NH3 - Ammonia (Gas)

HCl - Hydrochloric acid (Liquid)

NH4Cl - Ammonium chloride (Solid)

$\huge\tt\red{Change\:In\:Colour}$

CuSO4+Fe---->FeSO4+Cu

CuSO4 - Copper Sulphate/Blue Vitriol(Blue colour)

FeSO4 - Ferrous Sulphate/Green Vitriol(Green colour)

Hope it helps you.....✔✔✔