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  •  Which of the following statements are correct? (a) The unit of k in the expression <img alt="\mathrm{ V=k T~ is ~m^3 k^{-1}}" src="https://entrancecorner.oncodecogs.com/gif.latex?

 Which of the following statements are correct?
(a) The unit of k in the expression \mathrm{ V=k T~ is ~m^3 k^{-1}}.
(b) A gas is heated at constant pressure from \mathrm{ 25^{\circ} \mathrm{C}~ to ~50^{\circ} \mathrm{c}}. It expands to twice its initial volume.
(c) The volume occupied by \mathrm{32 \mathrm{~g}} of oxygen is greater than that occupied by \mathrm{16 \mathrm{~g}} of methane, both being at the same T and p.
(d) All real gases can be liquefied below it critical temperature

Option: 1

a and b only
 


Option: 2

a and d only


Option: 3

b , c and d only

 


Option: 4

a, c and d only


Answers (1)

best_answer

(a) unit of  \mathrm{k=\frac{\text { mit of volume }}{\text { wit of temperature }}=\frac{\mathrm{m}^3}{k} }

(b) we have,

\mathrm{V_2=V_1\left(\frac{T_2}{T_1}\right)=V_1\left(\frac{273+50}{273+25}\right)=V_1\left(\frac{323}{298}\right)+2 V_1 }

C) 32 g of \mathrm{O}_2, and 16 g of \mathrm{CH}_4, each is equal to 1 mol. thence, they occurs the same volume.

(d) A real gas can be liquefied prodded its temperature is less than its critical temperature.

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