The equations below represent two industrial processes involved in the preparation of ammonium nitrate - NSC Physical Sciences - Question 10 - 2017 - Paper 2
Question 10
The equations below represent two industrial processes involved in the preparation of ammonium nitrate.
Process X
I: A + 5O2(g) → 4NO(g) + 6H2O(g)
II: 2NO(g) + O2(g... show full transcript
Worked Solution & Example Answer:The equations below represent two industrial processes involved in the preparation of ammonium nitrate - NSC Physical Sciences - Question 10 - 2017 - Paper 2
Step 1
10.1.1 NAME of substance A
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The name of substance A is Ammonia.
Step 2
10.1.2 FORMULA of substance B
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The formula of substance B is NO2 (Nitrogen Dioxide).
Step 3
10.1.3 NAME given for reaction I
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Reaction I is known as the Catalytic Oxidation of Ammonia.
Step 4
10.1.4 NAME or FORMULA of the catalyst used in reaction I
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The catalyst used in reaction I is Platinum (Pt).
Step 5
10.1.5 Name of process X
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Process X is referred to as the Ostwald process.
Step 6
10.1.6 Name of process Y
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Process Y is known as the Haber process.
Step 7
10.1.7 Balanced equation for the preparation of ammonium nitrate
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The balanced equation for the preparation of ammonium nitrate can be written as:
NH3+HNO3→NH4NO3
Step 8
10.2.1 Mass of phosphorus in the bag
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Answer
To calculate the mass of phosphorus in a 15 kg bag of fertilizer containing 5% phosphorus:
the mass of phosphorus = 15 kg × (5 / 100) = 0.75 kg.
Step 9
10.2.2 Mass of filler in the bag
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The mass of filler can be calculated by finding out the total mass of nutrients in the bag:
Total mass of nutrients = 5% (Phosphorus) + 10% (Nitrogen) + 15% (Potassium) = 30%
Thus, mass of filler = 100% - 30% = 70%
Mass of filler in the bag = 15 kg × (70 / 100) = 10.5 kg.
