Question 980: Thermodynamics & KTG

Question

The volume occupied by the molecules contained in 4.5 kg water at STP, if the intermolecular forces vanish away is

Accepted Answer

From ideal gas equation
$$PV = nRT$$
$$\left[ {n = {{mass\,of\,water} \over {mol.\,wt.}} = {{4.5 	imes {{10}^3}} \over {18}}} ight]$$
$$V = {{nRT} \over P}$$
At $$STP \Rightarrow T = 273\,K$$
$$P = {10^5}$$ N/m
2
$$V = {{4.5 	imes {{10}^3}} \over {18}} 	imes {{8.3 	imes 273} \over {{{10}^5}}} = 5.66$$ m
3

Answer

5.6 $$	imes$$ 106 m3

Answer

5.6 $$	imes$$ 103 m3

Answer

5.6 $$	imes$$ 10$$-$$3 m3

Answer

5.6 m3

Thermodynamics & KTG

The volume occupied by the molecules contained in 4.5 kg water at STP, if the intermolecular forces vanish away is

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