A chemist finds that when platinum is added to a reaction, the reaction speeds up. He thinks the platinum may be acting as a catalyst. What measurement should the chemist make to determine whether it is a catalyst?

Measure the mass of the platinum before and after the reaction.

Measure the temperature of the solution before and after the reaction.

Measure the change in volume of the solution.

Measure the amount of gas released by the reaction.

Question

A chemist finds that when platinum is added to a reaction, the reaction speeds up. He thinks the platinum may be acting as a catalyst. What measurement should the chemist make to determine whether it is a catalyst?

 Measure the mass of the platinum before and after the reaction.

 Measure the temperature of the solution before and after the reaction.

 Measure the change in volume of the solution.

 Measure the amount of gas released by the reaction.

anonymous · Answer

@lncognlto @Frostbite @e.cociuba @BulletWithButterflyWings @abb0t

anonymous · Answer

@abb0t  are you sure?

abb0t · Answer

measure the mass of platinum before and after

abb0t · Answer

catalysts only speed up the reaction. they can be used and reused, hence it remains unchanged. I misread the question.

anonymous · Answer

Yes. Catalysts take part in the reaction, but are recovered completely after the reaction. So measuring the mass is the best way to find out.