Read the given statements carefully.

(i) Equal volumes of gases contain equal number of molecules at the same temperature and pressure.
(ii) 273 K and $1.015 \times 10^{5}$ Pa are considered as standard temperature and pressure.
(iii) Equal volumes of gases contain unequal number of molecules at the same temperature and pressure.
(iv) At STP, one mole of any gas will have a volume of 22.4 L.

Which of the following statements are correct?

Statement (i)

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Statement (ii)

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Statement (iii)

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Statement (iv)

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Solution

The correct options are
A
Statement (i)

B
Statement (ii)

D
Statement (iv)

The following statements are true:
(i) Equal volumes of gases contain equal number of molecules at the same temperature and pressure.
(ii) 273 K and $1.015 \times 10^{5}$ Pa are considered as standard temperature and pressure.
(iv) At STP, one mole of any gas will have a volume of 22.4 L.

Statement 3 is not true because it negates statement 1.

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Similar questions

According to Avogadro's Law, "Equal volumes of gases at the same temperature and pressure contain equal numbers of molecules". But how is this statement correct? How do we know that equal number of molecules are present in two gases taken in equal volumes?

Even if we consider equal volumes of any two gases(let's consider two gases for example) contain equal number of molecules, if we have the two gases in two containers of same volumes, we can add more gas to any one container and increase the density of the gas inside the container. In that case, the volume of the gas remains equal to the volume of the container but the number of gas molecules inside the container has increased and there is no chage to the number of molecules of the other gas we took inside a similar container. So now we have equal volumes of two gases but we have increased the number of molecules of one gas so now how can we say that the equal volumes of these two gases contain equal number of molecules?

If we take equal number of molecules of two gases and contain one of the gas in a container of some volume and the other gas in a container of a different volume, we will have unequal volumes of two gases having equal number of particles.

So how is Avogadro's Law explained?

Q. Statement 1: At the same temperature and pressure, 1 L of hydrogen gas and 1 L of neon gas have the same mass.
Statement 2: Equal volumes of ideal gases at the same temperature and pressure contain the same number of moles.

Q. The proposition 'equal volumes of different gases contain equal numbers of molecules at the same temperature and pressure' is known as _____.

Q. At the same temperature and pressure, equal volume of gases contains the same number of molecules.

Q. 'Equal volumes of all gases at the same temperature and pressure contain equal number of molecules'. This law is called as

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