write down the main overall reactions equation for the manufacture of following chemicals. 1)soda ash, 2)superphospate from phosphate rock, 3)urea, 4) High octance petrol from naphtha,5)vinyl acetate from ethylene, 6) acrylonitrile from phosphate.
Answers
Answer:
1. 2 NaCl + CaCO3 → Na2CO3 + CaCl2
2. 2Ca5(PO4)3F + 7H2SO4 + 3H2O → 7CaSO4 + 3Ca(H2PO4)2 .H2O + 2HF
3. 2NH3+ CO2 ⇌ H2N-COONH4
H2N-COONH4 ⇌ (NH2)2CO + H2O
Explanation:
1. When Sodium Chloride reacts with Calcium Carbonate the ;products that we obtain are Sodium Bi-carbonate and Calcium Chloride.
2. Superphosphate is manufactured by reacting insoluble phosphate rock with sulfuric acid to form a mixture of soluble mono-calcium phosphate and calcium sulphate (approximately 9% phosphorous) which is able to be used by plants.
3. Urea is obtained by several processes. One of methods include a reaction of ammonia, carbon monoxide and sulfur in methanol. This reaction has two steps, the first one incluede the formation of tone amide group while the second step results in the final compound. It is prepared from liquid ammonia and liquid carbon dioxide and it is performed at high pressure and temperatures.
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