Question

Write the symbol equations for the following word equations
1. Nitric Acid + Calcium Hydroxide Calcium Nitrate + Water
2. Ferrous Sulphate + Ferric Oxide + Sulphur di oxide
3. Hydrogen sulphide + Oxygen Water + Sulphur Di Oxide
4. Carbon mono oxide + Hydrogen  Methanol
5. Sodium oxide + Water Sodium Hydroxide
6. Carbon di oxide + Water Glucose + Oxygen
7. Barium chloride + Aluminum Sulphate Barium Sulphate
8. Zinc Nitrate Zinc oxide + Nitrogen di oxide + Oxygen
9. Calcium Oxide + Hydro chloric acid Calcium Chloride + Water
10. Ammonia Nitrogen + Hydrogen

Identified the type of following reactions
1. CO2 + H2O C6H12O6 + O2
2. FeSO4 Fe2O3 + SO2 + SO3
3. HNO3 + Ca (OH)2  Ca (NO3)2 + H2O
4. H2S + O2 H2O + SO2
5. BaCl2 + Al  AlCl3 + Ba

Answer 1

Question:-

Write the chemical equations for the following word equation:-

Required Answers:-

1. Nitric acid + Calcium hydroxide $\longrightarrow$ Calcium Nitrate + Water

✓ $\sf{2HNO_3 + Ca(OH)_2 \longrightarrow Ca(NO_3)_2 + 2H_2O}$

2. Ferrous Sulphate $\sf{\xrightarrow{heat}}$ Ferric Oxide + Sulphur dioxide + Sulphur trioxide

✓ $\sf{2FeSO_4 \xrightarrow{heat} Fe_2O_3 + SO_2 + SO_3}$

3. Hydrogen Sulphide + Oxygen $\longrightarrow$ Water + Sulphur dioxide

✓ $\sf{2H_2S + 3O_2 \longrightarrow 2H_2O + 2SO_2}$

4. Carbon monoxide + Hydrogen $\longrightarrow$ Methanol

✓ $\sf{CO + 2H_2 \longrightarrow CH_3OH}$

5. Sodium oxide + Water $\longrightarrow$ Sodium Hydroxide

✓ $\sf{Na_2O + H_2O \longrightarrow 2NaOH}$

6. Carbon dioxide + Water $\sf{\xrightarrow{heat}}$ Glucose + Oxygen

✓ $\sf{6CO_2 + 6H_2O \xrightarrow{heat} C_6H_{12}O_6 + 6O_2}$

7. Barium Chloride + Aluminium Sulphate $\longrightarrow$ Barium Sulphate + Aluminium Chloride

✓ $\sf{3BaCl_2 + Al_2(SO_4)_3 \longrightarrow 3BaSO_4 + 2AlCl_3}$

8. Zinc nitrate $\sf{\xrightarrow{heat}}$ Zinc Oxide + Nitrogen dioxide + Oxygen

✓ $\sf{2Zn(NO_3)_2 \xrightarrow{heat} 2ZnO + 4NO_2 + O_2 }$

9. Calcium Oxide + Hydrochloric acid $\longrightarrow$ Calcium Chloride + Water

✓ $\sf{CaO + 2HCl \longrightarrow CaCl_2 + H_2O}$

10. Ammonia $\sf{\xrightarrow{heat}}$ Nitrogen + Hydrogen

✓ $\sf{2NH_3 \xrightarrow{heat} N_2 + 3H_2 }$

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Question:-

Identify the type of chemical reactions:-

Required Answers:-

1. $\sf{CO_2 + H_2O \xrightarrow{heat} C_6H_{12}O_6 + O_2}$

✓ This is a type of Endothermic Reaction. It is because in this reaction heat is absorbed to form glucose and oxygen.

2. $\sf{FeSO_4 \xrightarrow{heat} Fe_2O_3 + SO_2 + SO_3}$

✓ This is a type of decomposition reaction and endothermic reaction as well. It is a decomposition reaction because here once substance is decomposing to form new substance. While it an Endothermic reaction because here heat is being absorbed.

3. $\sf{HNO_3 + Ca(OH)_2 \longrightarrow Ca(NO_3)_2 + H_2O}$

✓ This is a type of neutralization reaction. It is because here nitric acid (acid) is neutralizing Calcium hydroxide (base) to form a salt calcium nitrate.

4. $\sf{H_2S + O_2 \longrightarrow H_2O + SO_2}$

✓ This is a type of exothermic reaction. It is because when hydrogen sulphide is burnt in air, heat is evolved.

5. $\sf{BaCl_2 + Al \longrightarrow AlCl_3 + Ba}$

✓ This is a type of displacement reaction. It is because here aluminium has displaced another element barium from Barium Chloride.

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$\bf{\underline{\underline{\large{Note!!!}}}}$

While balancing an equation it is necessary to balance the equation in order to follow the law of conservation of mass which states that atoms can neither be created nor be destroyed in a chemical reaction.

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