Answer to Question #278472 in Chemistry for michelle

Question

A solid piece of limestone (CaCO₃) is reacted with 1.0 mol/L sulfuric acid at 25°C. To decrease the number of effective collisions (rate), you could: *

1 point

1. Use sulfuric acid with a concentration of 0.5 mol/L
2. Add a catalyst
3. Increase the temperature to 27°C
4. All of the above
5. Use powdered calcium carbonate

Answer 1

1. Use sulfuric acid with a concentration of 0.5 mol/L.