14. a while H,O, can act as oxidising as well as reducing agent in their reactions, O; and
HNO, acts as oxidants only.
b. Explain the physical significance of vander Waals parameters.
c. What is the value of the gas constant in SI units?
Answers
Answer:
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Answer:
a. In sulphur dioxide (SO2), the oxidation number (O.N.) of S is +4 and the range of the O.N. that S can have is from +6 to -2.
Therefore, SO2 can act as an oxidising as well as a reducing agent.
In hydrogen peroxide (H2O2), the O.N. of O is -1 and the range of the O.N. that O can have is from 0 to -2. O can sometimes also attain the oxidation numbers +1 and +2. Hence, H2O2 can act as an oxidising as well as a reducing agent.
b. The van der Waals constant 'a' represents the magnitude of intermolecular forces of attraction and the Van der Waals constant 'b' represents the effective size of the molecules
c. the value of universal gas constant in SI units is 8.3124 J K -1 mol -1