Why Does Salt Make Water Boil Faster Chemistry
Olivia Luz
Adding salt to water is going to do two things to water s physical properties.
Adding salt to water increases the boiling point of water due to a fundamental colligative property of matter known as boiling point elevation. Adding salt to water increases the boiling point of water due to a fundamental colligative property of matter known as boiling point elevation. Adding salt to water doesn t make it boil faster it makes it hotter. The more salt or any solute added to water the more you raise the boiling point.
These two changes actually work against each other. It s because adding the salt lowered the heat capacity of the water. This phenomenon occurs for all solute solvent systems regardless of. When salt is added it makes it harder for the water molecules to escape from the pot and enter the gas phase which happens when water boils giddings said.
Boiling in your reported results you mentioned that the pure water boiled faster than the salt water. Maybe so much salt that some doesn t quite dissolve. The water molecules need more energy to produce enough pressure to escape the boundary of the liquid. This gives salt water a higher boiling.
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If you add salt to water it will increase its boiling point from around 100 106. But is this actually true. While i am not arguing that your results are wrong i would like to suggest you try the experiment again but this time put even more salt in the water. The heat capacity is the amount of energy needed to raise the temperature of water by 1 c.
The boiling point of water is at 100 degrees celsius. One of the classic examples is to add salt to your water in order to get it to boil faster. Whenever a solute such as salt is added to a solvent such as water the boiling point becomes higher than that of the pure solvent.
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