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CBSE 11th Standard Chemistry Subject State of Matter Ncert Exemplar 1 Mark Questions With Solution 2021

Published on: 27/05/2021

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Std: 11th Standard CBSE - Chemistry

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Questions:

1 Marks

4 x 1 = 4

The pressure exerted by saturated water vapor is called aqueous tension.what correction term will you apply to the total pressure to obtain a pressure of the dry gas?

What will be the molar volume of nitrogen and argon at 273.15k and 1 atm?

The critical temperature(T_c) and critical pressure(P_c) of CO₂ are 30.98^oC and 78 atm respectively. Can CO₂(g) be liquefied at 32^oC and 80 atm pressure?

Name two phenomena that can be explained on the basis of surface tension.

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Answers Key:

1 Marks

4 x 1 = 4

()
p_drygas = p_{moist gas}(i.e total pressure)-aqueous tension.

()
Every gas has 22.4 L molar volume at 273.15K 1 atm pressure(STP).

()
The given critical temperature and pressure of the CO₂ gas are 30.98^o C and 73 atm respectively. This suggests that CO₂ gas cannot be liquefied above 30.98^oC and 73 atm. However high temperature and pressure may be applied to CO₂ gas. Hence, CO₂ gas cannot be liquefied at 32^oC and 80 atm.