When a mixture of gases X and Y is compressed to 300 atm pressure and then passed over a catalyst consisting of a mixture of zinc oxide and chromium oxide (heated to a temperature of 300°C), then an organic compound Z having the molecular formula CH4O is formed. X is a highly poisonous gas which is formed in appreciable amounts when a fuel burns in a limited supply of air ; Y is a gas which can be made by the action of a dilute acid on an active metal; and Z is a liquid organic compound which can react with sodium metal to produce hydrogen gas.
(a) What are X, Y and Z ?
(b) Write a balanced chemical equation of the reaction which takes place when X and Y combine to form Z. Indicate the conditions under which the reaction occurs.
Lakhmir Singh Chemistry Class 10
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Answer:
a) X is carbon monoxide gas (CO); Y is hydrogen gas H2
; Z is methanol (or Methyl alcohol) (CH
30H)
b) Formation of Z;
CO(g)+2H2
(g)
300atm, 300
0
C
ZnO, CrO
3
CH
3
OH(l)
Methanol (Methyl alcohol)
The conditions for this reaction to take place are: a pressure of 300 atmosphere (written as 300 atm), a temperature of 300
0
C , and a catalyst which is a mixture of zinc oxide and chromium oxide (ZnO+CrO
3
)
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