Heat Capcity for Water

[Lauryn Jordan 1F]

How do you know which heat capacity to use for water?

[Hannah Krusenoski 2L]

I believe water always has a heat capacity of 4.184 J/g°C

[Chris Lamb 1G]

There are different heat capacities for different states, so you need to know the waters's state. Also, you have molar heat capacity as well as specific heat capacity, and the one you choose depends on the units of your given information.

[Humza_Khan_2J]

Bouncing off of the last commenter, the problem should give you which phase the water is in. If it it transitioning from phase to phase, you would have to use either the enthalpy of fusion or the enthalpy of vaporization.

[Qining Jin 1F]

Specific heat capacity for water(solid) is 2.03 J/g°C, water(liquid) is 4.184 J/g°C, and water(vapor) is 2.01 J/g°C

[Yea Eun Lee 1H]

We'll be given those values for the test, right?

[Wenting Hu 2H]

Yes, it's on the constants and formula sheet on his website.

[504754253]

will the heat capacity alway be given

[Anne 2L]

Yes, the heat capacity should always be given. I don't think we have the means to calculate heat capacity outside of a lab setting.