Which substance most likely has the highest boiling point?
2 answers:
Answer: The correct answer is calcium chloride , an ionic compound.
Explanation:
Ionic compounds are the compounds in which complete transfer of electrons takes place from one element to another. In these compounds, the forces of attraction between the particles is strong and hence, they have the highest boiling points.
Covalent compounds are the compounds in which sharing of electrons takes place between two elements forming a bond. There are two types of covalent compounds: Polar and Non-polar.
The forces of attraction between the particles is stronger in polar covalent compounds as compared to the no-polar covalent compounds. But, the forces of attraction between covalent compounds is less than the ionic compounds.
Hence, the order of increasing boiling points is given by:
Non-polar covalent < Polar covalent < Ionic
Therefore, the correct answer is calcium chloride , an ionic compound.
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Explanation:
As it is given that solubility of water in diethyl ether is 1.468 %. This means that in 100 ml saturated solution water present is 1.468 ml.
Hence, amount of diethyl ether present will be calculated as follows.
(100ml - 1.468 ml)
= 98.532 ml
So, it means that 98.532 ml of diethyl ether can dissolve 1.468 ml of water.
Hence, 23 ml of diethyl ether can dissolve the amount of water will be calculated as follows.
Amount of water =
= 0.3427 ml
Now, when magnesium dissolves in water then the reaction will be as follows.
Molar mass of Mg = 24.305 g
Molar mass of = 18 g
Therefore, amount of magnesium present in 0.3427 ml of water is calculated as follows.
Amount of Mg =
= 0.462 g