BIOCHEMISTRY
PROPERTIES OF WATER
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Polarity of water pull apart the salt molecule.
|
|
|
Cohesive properties of water attract the salt.
|
|
|
Water’s ability to retain heat keeps the salt moving.
|
|
|
Hot water melts the salt.
|
Detailed explanation-1: -If you have ever dissolved salt in hot water, you have witnessed the effectiveness water has as a solvent. Which of the following best explains how salt dissolves? Polarity of water pull apart the salt molecule.
Detailed explanation-2: -Salt is dissolved in water to form salt-water. Here salt is present as a solute and water as a solvent.
Detailed explanation-3: -Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together. After the salt compounds are pulled apart, the sodium and chloride atoms are surrounded by water molecules, as this diagram shows. Once this happens, the salt is dissolved, resulting in a homogeneous solution.
Detailed explanation-4: -A substance that is dissolved in a solution is called a solute. In fluid solutions, the amount of solvent present is greater than the amount of solute. One best example of solute in our day to day activity is salt and water. Salt dissolves in water and therefore, salt is the solute.
Detailed explanation-5: -Generally speaking, water is good at dissolving ions and polar molecules, but poor at dissolving nonpolar molecules. (A polar molecule is one that’s neutral, or uncharged, but has an asymmetric internal distribution of charge, leading to partially positive and partially negative regions.)