I. Answer the following:
1. Explain in detail the reaction between vinegar and baking soda.
Also write the equation.
2. Explain in detail the reaction between Copper sulphate and
Iron. Also write the equation.
II. Name the reactants and products for the following equations. Also
balance the equation.
1. Mg + Cl2 →MgCl
2. Na + Cl2→ NaCl
3. Fe + O2 → Fe2O3
Answers
I. Answer the following:
1. Vinegar is acetic acid while baking soda is sodium bicarbonate. When
baking soda and vinegar mix, they react with each other and produce
carbon dioxide.
The chemical reaction can be represented by the following word equation:
Vinegar + Baking Soda → Carbon dioxide + Water +
Other substances
2. Reaction between copper sulphate solution and iron is a good example of a chemical change exhibiting a colour change.
The word equation for this reaction is:
Copper sulphate + Iron → Iron sulphate + Copper
(Blue) (Black) (Green) (Brown)
On adding black-coloured iron nail to blue-coloured copper sulphate
solution, green-coloured iron sulphate solution is produced along with
brown copper.
II. Name the reactants and products for the following equations. Also
balance the equation.
1. 2Mg + Cl2→ 2MgCl
Reactants Products
Reactants- Magnesium, chlorine
Product- Magnesium chloride
2. 2Na + Cl2→ 2NaCl
Reactants Products
Reactants- Sodium, chlorine
Product- Sodium chloride
3. 4Fe +3 O2 →2 Fe2O3
Reactants Products
Reactants- Iron, oxygen
Product- Iron oxide