Stoichiometry
Pick out the wrong unit conversion of temperature.

°C = (F- 32) x 0.555
Temperature difference of 1°K = 1°C = 9/5 °F
°R = 273 + °F
°F = (°C + 17.778) x 1.8

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Stoichiometry
The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water Xw in the vapour phase satisfies

0 < Xw < 0.5
Xw = 0.5
Xw = 1.0
0.5 < Xw < 1.0

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Stoichiometry
A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are Xc and Xs respectively. Which of the following statement is correct?

Xc > Xs
Xc < Xs
Xc = Xs
Xc greater/less than Xs depending on the length of the cylinder

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