Table of Contents
Why is NaCl more soluble in water than sugar?
The reason for this is because the sugar molecules are bigger than the ions of dissolved salt. This allows for more water molecules to surround a single particle, pulling it into solution faster.
Why is glucose more soluble in water?
A Water-soluble sugar The reason glucose dissolves readily in water is because it has lots of polar hydroxyl groups which can hydrogen-bond with water molecules. Hydrogen bonds are very important intermolecular forces which determine the shape of molecules like DNA, proteins and cellulose.
Is NaCl most soluble in water?
Table salt, or sodium chloride (NaCl), the most common ionic compound, is soluble in water (360 g/L). By contrast, when molecular compounds dissolve in water, it is the intermolecular forces between separate molecules that are disrupted.
What makes sugar more soluble than salt?
The oppositely charged ends of polar water molecules attract the ions and pull them away, resulting in dissolving. Sugar is made from sucrose molecules which are larger and more complex than the ions in salt (See Teacher Background Lesson 1.2).
Why does sugar dissolve faster than salt in water?
The reason why sugar dissolves at a faster rate in hot water has to do with increased molecular motion. The added energy in the hot water causes water molecules to move faster and sucrose molecules to vibrate faster. This added movement tends to make the bonds between sucrose molecules easier to overcome.
Why are salts soluble in water?
At the molecular level, salt dissolves in water due to electrical charges and due to the fact that both water and salt compounds are polar, with positive and negative charges on opposite sides in the molecule. Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together.
Why are some salts soluble and others insoluble?
A salt is soluble if it dissolves in water to give a solution with a concentration of at least 0.1 moles per liter at room temperature. A salt is insoluble if the concentration of an aqueous solution is less than 0.001 M at room temperature. Slightly soluble salts give solutions that fall between these extremes.
What is more soluble than NaCl?
NaCl is more soluble in water than KCl. Solubility depends on the size of the cation as the anion is the same. The solubility of NaCl is 359 g/L at 200C and the solubility of KCl is 344 g/L at 200C.
Why does sugar dissolve less than salt in water?
It’s almost the same. In my opinion, it is different because sugar and water are polar substances, so sugar can dissolve easily. However, salt can be polar and nonpolar, so it may be difficult to dissolve in water. Polar substances dissolve in polar substances.