Question

When 3.926g of NaOH is added to 100.0mL of water, the temperature of the solution increases by 28 degrees Celsius. Assume the density of the solution to be 1g/mL and specific heat capacity of the solution to be 4.184 J/gK. I'm unsure of which formula to use. I was going to use q=(m)(Cs)(T) but I don't know the initial or final temperature.

Answer 1

You don't ask the question but I assume you will be calculate delta H or something like that. Yes, use q = mcdT. That's right, you don't have Tfinal and Tinitial BUT the problem tells you T increased by 28 C so Tfinal-Tinitial = 28

Answer 2

I apologize for my typo, I meant to write that the temperature increased by 2.8 degrees. Does that change anything or should I still just plug that into the formula?

Answer 3

Plug and chug.delta T is 2.8

Answer 4

Thank you!