Question

Change the following word equations into balanced equations.
a. Hydrogen + Chlorine → Hydrogen chloride
b. Hydrogen + Nitrogen → Ammonia
c. Potassium chlorate → Potassium chloride + Oxygen

Answer 1

Answer:

a. Hydrogen + Chlorine → Hydrogen chloride

Chemical equation :

• H₂ (Hydrogen) + Cl₂ (Chlorine) → HCl (Hydrogen chloride)

In left hand side, there are two hydrogen atoms and two chlorine atoms. In right hand side, there are one hydrogen and one chlorine in hydrogen chloride.

So, for balancing this equation we will multiply 2 to right hand side.

=> H₂ + Cl₂ → 2HCl

In this all atoms of hydrogen and chlorine are balanced in both L.H.S and R.H.S .

All are in gases state here, So we will write symbols of their states.

Balanced chemical equation :

• H₂ (g) + Cl₂ (g) → 2HCl (g)

b. Hydrogen + Nitrogen → Ammonia

Chemical equation :

• H₂ (Hydrogen) + N₂ (Nitrogen) → NH₃ (Ammonia)

In left hand side, there are two hydrogen atoms and 2 nitrogen atoms. In right hand side, there are one nitrogen and three hydrogen atoms in Ammonia.

So for balancing, We will multiply Hydrogen by 3 in L.H.S and Ammonia by 2 in R.H.S.

=> 3H₂ + N₂ → 2NH₃

All are in gases state. So we will write symbols of their states.

Balanced equation :

• 3H₂ (g) + N₂ (g) → 2NH₃ (g)

c. Potassium chlorate → Potassium chloride + Oxygen

Chemical equation :

• KCLO₃ (Potassium chlorate) → KCl (Potassium chloride) + O₂ (Oxygen)

In left hand side, there are one potassium atoms, one chlorine atoms and three oxygen atoms in potassium chlorate. In right hand side, there are one potassium atom, one chlorine atom in Potassium chloride and two oxygen atoms.

So for balancing, We will multiply KClO₃ by 2 in L.H.S, KCl by 2 and O₂ by 3 in R.H.S.

=> 2KCLO₃ → 2KCl + 3O₂

2KClO₃ is in solid state, 2KCl is also in solid state and 3O₂ is in gaseous state. So we will write their symbols of their states.

Balanced equation :

• 2KClO₃ (s) → 2KCl (s) + 3O₂ (g).