If 100mL of 1mol HCL is mixed with 100 mL of 1mol NaOH, a temp rise of 6.2C occurs. What temp change will be obserbed, if under the same conditions, 10mL of 1mol NaOH is mixed with 10mL 1mol HCL?

x

Why wouldn't it be the same? One gets 1/10 th of the heat, but has only 1/10th of the solution to heat up?

This ignores thermal loss from surface areas.