Question

H. If density of a gas is measured at
constant temperature and pressure then
which of the following statement is
correct?
a. Density is directly proportional to
molar mass of the gas.
b. Greater the density greater is the
molar mass of the gas.
c. If density, temperature and pressure
is given ideal gas equation can be
used to find molar mass.
d. All the above statements are correct.





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Answer 1

Answer:

(d) all of the above statements are correct

Explanation:

PV=nRT

P(m/d) = (m/M)RT....where m is mass ,d is density, M is molar mass

P/d=RT/M......1

given T,P are const and R is always const

1/d is directly proportional to 1/M

d is directly proportional to M

thus (a) is correct

ofcourse if d is directly proportional to M then greater the d greater will be M

thus (b) is correct

by eq 1 if we know P,T,d then we can find M

thus (c) is correct

therefore the final answer is (d) all are correct

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Answer 2

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