Table of Contents
- 1 Why does water have a high specific heat and why is it important?
- 2 Why does water have a higher specific heat than metal?
- 3 Does alcohol or water have a higher specific heat?
- 4 Why does salt water have a higher surface tension than water?
- 5 How do you calculate specific heat of water?
- 6 Why does water have a high latent heat of vapourisation?
Why does water have a high specific heat and why is it important?
A high specific heat of a substance means that a large amount of heat is required to raise the temperature of the substance. Water covers around 70% of the Earth’s surface and its high specific heat plays a very important role as it is able to absorb a lot of heat without a significant rise in the temperature.
Why does water have a high specific heat quizlet?
Water’s high specific heat can be traced to hydrogen bonding: It needs energy to break the hydrogen bond. – Heat is released when hydrogen bonds form. As water cools, hydrogen bonds form and water vapor releases stored energy.
Why does water have a higher specific heat than metal?
Water has a higher specific heat capacity because it has less of a tendency to change in temperature. What this signifies is that more energy is required to increase the temperature of the water.
Is alcohols specific heat higher than water?
The authors have examined a number of mixtures of alcohol and water. They show that the specific heat of these mixtures, up to an alcoholic strength of about 36 per cent., is higher than the specific heat of water itself.
Does alcohol or water have a higher specific heat?
How does water’s specific heat compare to alcohol’s specific heat? Water’s specific heat is unusually high at 1 cal/g•°C, whereas alcohol’s specific heat is is 0.6 cal/g•°C. Explain how hydrogen bonding contributes to water’s high specific heat.
What metal has the highest specific heat?
Which metal has highest heat capacity? Does gold heat up faster than copper? Does copper heat up quickly?…Does gold heat up faster than copper?
| Substance | Specific Heat (J/g°C) |
|---|---|
| Gold (s) | 0.129 |
| Iron (s) | 0.449 |
| Lead (s) | 0.129 |
Why does salt water have a higher surface tension than water?
Because of its charge, water molecules bind strongly to the ion. More strongly than they do to each other. So adding salt strengthens the network of intermolecular bonds in the water. So since surface tension is due to the intermolecular bonds, stronger intermolecular bonds will lead to higher surface tension.
What is it that causes water to have a high specific heat?
The high specific heat of water is attributed to the many hydrogen bonds that join the multitude of water molecules. In order to increase the temperature of water, the molecules have to vibrate. Because there are so many hydrogen bonds, a high amount of heat energy is needed to cause the water molecules to vibrate and, eventually, to break them.
How do you calculate specific heat of water?
Calculate specific heat as c = Q / (m * ΔT). In our example, it will be equal to c = -63000 J / (5 kg * -3 K) = 4200 J/(kg*K). This is the typical heat capacity of water. If you have problems with the units, feel free to use our temperature conversion or weight conversion calculators.
Why does water hold heat for so long?
Water take long to heat and cool down is because it needs to gain more energy than a comparable amount of air or land to increase its temperature, and it means that, once heated, a body of water will hold onto that heat for a much longer period of time than either air or land.
Why does water have a high latent heat of vapourisation?
To say that water has a high heat of vaporization means that it takes a lot of heat energy to change its phase from liquid to solid. The reason why is that water forms relatively strong hydrogen bonds between the molecules.