Measured Temperature Change

Question

If the volume of  and NaOH is doubled (100 mL) while keeping the concentration the same (1 M), the measured temperature change will be

a

Double since more mols are reacting

b

Same since both qsol and mass of the solution doubles

c

Half since mass of the solution is doubled

d

Don't know

I originally thought the answer was (a) but I'm a bit unsure how to go about this problem now.

Answer 1

Hello, Abigail,

I believe the temperature would be the same. Yes, there is twice the heat, but you also have twice the solution, so the temperature shouldn't change, in an ideal system. (It will likely change in a non-ideal environment, since the rate of heat transfer out of the system would likely be different).

Bob