Which factor affects the solubility of a substance but not the rate at which it dissolves? A. stirring B. surface area C. temper
2 answers:
Answer: Option (D) is the correct answer.
Explanation:
Polarity is defined as the presence of charges (positive or negative) present on the atoms of a compound or molecule.
For example, NaCl is a polar molecule because it has ionic bond whereas is a non-polar molecule.
Also, it is known that like dissolves like that is, a polar molecule is soluble in a polar solvent whereas a non-polar molecule is soluble in a non-polar solvent.
When we stir, increase the surface area, and increase the temperature for a solution then rate of reaction also changes but molecular polarity does not affect the rate of a reaction.
You might be interested in
Answer : The final temperature of the mixture is
Explanation :
In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.
And as we know that,
Mass = Density × Volume
Thus, the formula becomes,
where,
= specific heat of ethanol =
= specific heat of water =
= mass of ethanol
= mass of water
= density of ethanol = 0.789 g/mL
= density of water = 1.0 g/mL
= volume of ethanol = 45.0 mL
= volume of water = 45.0 mL
= final temperature of mixture = ?
= initial temperature of ethanol =
= initial temperature of water =
Now put all the given values in the above formula, we get
Therefore, the final temperature of the mixture is