10.1 Die onvolledige vergelykings hieronder toon die vier stappe betrokke by die nywerheidsberediing van swawelsuur (H₂SO₄) - NSC Physical Sciences - Question 10 - 2021 - Paper 2
Question 10
10.1 Die onvolledige vergelykings hieronder toon die vier stappe betrokke by die nywerheidsberediing van swawelsuur (H₂SO₄). A en B verteenwoordig twee verbindings.
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Worked Solution & Example Answer:10.1 Die onvolledige vergelykings hieronder toon die vier stappe betrokke by die nywerheidsberediing van swawelsuur (H₂SO₄) - NSC Physical Sciences - Question 10 - 2021 - Paper 2
Step 1
10.1.1 Verbindings A
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Answer
Die verbinding A is swaweldioksied, wat chemies aangedui word as SO₂.
Step 2
10.1.2 Verbindings B
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Die verbinding B is swaweltrioksied, wat chemies aangedui word as SO₃.
Step 3
10.1.3 Die katalisator wat in Stap II gebruik word
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Die katalisator wat in Stap II gebruik word is vanadiumpentaoksied, V₂O₅.
Step 4
10.1.4 Skryf 'n gebalanseerde vergelyking vir hierdie reaksie neer.
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Die gebalanseerde reaksie vir die vorming van ammoniumsulfaat is:
H2SO4+2NH3→(NH4)2SO4
Step 5
10.2.1 Skryf die betekenis van NPK neer.
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NPK staan vir stikstof (N), fosfor (P), en kalium (K), wat die drie primêre voedingsstowwe in kunsmis is.
Step 6
10.2.2 Die sak bevat 4 kg ammoniumnitraat, NH₄NO₃, wat die enige bron van stikstof is. Bereken die massaverhouding van die kunsmis in die sak.
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Answer
Om die massa van stikstof (N) in 4 kg NH₄NO₃ te bereken, gebruik ons die molere gewigte:
Massa van N in NH₄NO₃ = 14 g/mol (N) × 4 kg / 80 g/mol (NH₄NO₃) = 0.7 kg.
