A1-m3 rigid tank contains 10 kg of water (in any phase or phases) at 160 0c. the pressure in the tank is: a)-370 kpa b)- 618 kpa c)-2000 kpa d)-1618 kpa e)-738 kpa

Option C is the correct answer.

Explanation:

We have ideal gas equation,  PV = nRT

Volume of tank, V = 1 m³

Mass of water = 10 kg

Mass of 1 mole of water = 18 g = 0.018 kg

Number of moles,

Temperature, T = 160 °C = 160 + 273 = 433 K

Ideal gas constant, R = 8.314 JK⁻¹mol⁻¹

Substituting

      P x 1 = 555 x 8.314 x 433

      P = 2000000 Pa = 2000 kPa

The pressure in the tank is 2000 kPa

Option C is the correct answer.              

ice to water 1 water to vapour 2 latent heat

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