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ethanol
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Which has the lower freezing point oxygen or ethanol and why?
ethanol
What will boil first water or alcohol?
I assume that by "boils faster" you really mean "boils at a lower temperature", and that by "alcohol" you mean "ethanol". Ethanol has a lower boiling temperature than water at standard pressure. However, a mixture of ethanol and water boils lower than either by themselves do. This is called an "azeotrope" and it happens for ethanol/water mixtures at about 95% ethanol, which is why it's essentially impossible to get ethanol to more than 190 proof by distillation alone.
Does bromine melt at a lower temperature than ethanol?
yes
Water and ether are placed on the palms of both the hands which will cause more cooling ether or water?
Ether has a greater cooling effect than water when smeared on your hands because of its evaporation method. Ether gets its energy from your hands. So when it evaporates, the cooling effect is greater than water.
What is the relationship between the enthalpy h and entropy s of a reaction that is spontaneous at higher temperatures but not at lower temperatures?
-H, +S
Which fluid evaporated more quickly water or ethanol explain why?
Ethanol is evaporated faster because the enthalpy of vaporization is lower.
Why does surgical spirit evaporate faster than water?
The ethanol enthalpy of vaporization is lower compared to water.
Why methanol boil at high temperature than dimethyl ether?
bcoz of the intermolecular hydrogen bonding in methyl alcohol the vapour pressure of the molecule equalises the atmospheric pressure at higher temperatures. there is no hydrogen bonding in dimethyl ether and hence the molecule escapes at relatively lower temperatures.
Is ionisation enthalpy of potassium higher than that of sodium?
The ionisation enthalpy of potassium is lower than that of sodium.
Which has the lower freezing point oxygen or ethanol and why?
ethanol
What will boil first water or alcohol?
I assume that by "boils faster" you really mean "boils at a lower temperature", and that by "alcohol" you mean "ethanol". Ethanol has a lower boiling temperature than water at standard pressure. However, a mixture of ethanol and water boils lower than either by themselves do. This is called an "azeotrope" and it happens for ethanol/water mixtures at about 95% ethanol, which is why it's essentially impossible to get ethanol to more than 190 proof by distillation alone.
Why do high temperatures have a higher absorbance than ethanol?
Ethanol is known to have a lower absorbance, in comparison to high temperatures, and this is base on ethanol chemical structure.
Does bromine melt at a lower temperature than ethanol?
yes
Which has the lower freezing point oxygen or ethanol?
Oxygen has a lower point.
Water and ether are placed on the palms of both the hands which will cause more cooling ether or water?
Ether has a greater cooling effect than water when smeared on your hands because of its evaporation method. Ether gets its energy from your hands. So when it evaporates, the cooling effect is greater than water.
What is the effect of placing a few drops of ethanol on hand?
A sensation of a lower temperature.
Why oxygen have less ionisation enthalpy than fluorine?
Oxygen has a lower electronegativity than fluorine (3.5 as compared to 4).
