_____ Water boils at 100 degree C and ethylene glycol boils at 197 degree C. The
ID: 484302 • Letter: #
Question
_____ Water boils at 100 degree C and ethylene glycol boils at 197 degree C. Therefore, at all temperatures water has a lower vapor pressure. at only some temperatures does water have a lower vapor pressure. ethylene glycol has more triple points than does water. at any given temperature the vapor pressure for water is greater than the vapor pressure for ethylene glycol. ethylene glycol has no hydrogen bonding. ethylene glycol has no critical point. _____ As you squeeze snow in your gloved hands, what happens to the melting point: increases. decreases. stays the same. _____ What is it called at the place on a phase diagram where liquid, water, and solid are all in equilibrium? critical point. triple point. boiling point. vapor pressure point.Explanation / Answer
At any given temperature vapour pressure of water is greater than vapour pressure of ethylene glycol as water has the lower boiling point water starts to vapourize before ethylene glycol and forms more vapour than ethylene glycol at any temperature more than that
14. (D) Answer
Whatever we do with any material its melting point remains same at constant pressure.
15) (c) Answer
Triple point is the point at which all three phases viz, liquid, gas and solid all are in equillirbium
16) (B) answer
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