(a)
Interpretation:
The chemical formula for CFC-12 has to be determined.
Concept-introduction:
Prediction of chemical formula for CFC:
Given: CFC-11
The code number is added by 90 to get a three digit number.
The first digit ‘1’ indicates the number of Carbon atoms,
The second digit ‘0’ indicates the number of Hydrogen atoms,
The third digit ‘1’ indicates the number of Fluorine atoms.
Then the remaining bonds are assumed to be chlorine.
(b)
Interpretation:
The code for the chemical formula
Concept-introduction:
Prediction of chemical formula for CFC:
Given: CFC-11
The code number is added by 90 to get a three digit number.
The first digit ‘1’ indicates the number of Carbon atoms,
The second digit ‘0’ indicates the number of Hydrogen atoms,
The third digit ‘1’ indicates the number of Fluorine atoms.
Then the remaining bonds are assumed to be chlorine.
(c)
Interpretation:
Using ‘90’ method work HCFC-22 has to be explained.
Concept-introduction:
Prediction of chemical formula for CFC:
Given: CFC-11
The code number is added by 90 to get a three digit number.
The first digit ‘1’ indicates the number of Carbon atoms,
The second digit ‘0’ indicates the number of Hydrogen atoms,
The third digit ‘1’ indicates the number of Fluorine atoms.
Then the remaining bonds are assumed to be chlorine.
(d)
Interpretation:
Whether Halon-1301 can be explained using ‘90’ method work or not has to be interpreted.
Concept-introduction:
Prediction of chemical formula for CFC:
Given: CFC-11
The code number is added by 90 to get a three digit number.
The first digit ‘1’ indicates the number of Carbon atoms,
The second digit ‘0’ indicates the number of Hydrogen atoms,
The third digit ‘1’ indicates the number of Fluorine atoms.
Then the remaining bonds are assumed to be chlorine.
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