Chemistry
One mole of sulphur dioxide represents which of the following?
P 22.4 litres at STP
Q 6.02 x 1023 atoms
R 6.02 x 1023 molecules
Only P
Only Q
Both P and Q
Both P and R
Answer
Both P and R
Reason —
One mole of sulphur dioxide (SO2) contains 6.02 x 1023 molecules and is equivalent to its gram molecular mass.
At Standard Temperature and Pressure (STP),
1 mole of any ideal gas = 22.4 litres
So, 1 mole of sulphur dioxide (SO2) gas occupies 22.4 litres at STP.
Related Questions
If the empirical mass of the formula PQ2 is 10 and the relative molecular mass is 30, then the molecular formula will be:
PQ2
P3Q2
P6Q3
P3Q6
The ratio between the number of molecules in 2 g of hydrogen and 32 g of oxygen is:
[Atomic mass: H=1, o=16]1:2
1:0.01
1:1
0.01:1
Assertion (A): The absolute scale of temperature is the Kelvin scale.
Reason (R): Kelvin scale starts from 0°C.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.