In IB Chemistry, we are doing a design lab and I'm trying to find an equation that's safe, easy to conduct that will allow me to measure change in temperature.

I'm suppose to alter either the concentration, pressure, or some other factor that influences the rate of reaction for this lab.

I need a reaction that produces two products, not just simple dissolution or combination, and it could be anything that changes temperature, any come to mind?

Question

In IB Chemistry, we are doing a design lab and I'm trying to find an equation that's safe, easy to conduct that will allow me to measure change in temperature. 

I'm suppose to alter either the concentration, pressure, or some other factor that influences the rate of reaction for this lab. 

I need a reaction that produces two products, not just simple dissolution or combination, and it could be anything that changes temperature, any come to mind?

aaronq · Answer

Acid-base reactions (neutralizations) are exothermic, look in your textbook for one that would be appropriate. A safe one would be acetic acid (vinegar) + sodium bicarbonate.

A parameter you can change to see the effect of rate is surface area, you can compare the rate of temperature change when you have a block of sodium bicarbonate versus the rate of change when it's powder.

anonymous · Answer

@aaronq thanks.

anonymous · Answer

|dw:1421789386774:dw|

Why is it shaped like this?

Then I'm told to draw the curve that I would obtain if I "double the volume of the HCl solution of HALF the concentration as in the example above used instead, with every other variable kept same"
Explain why the shape of curve is different


I suspect because its a second order reaction? Or is it something else?