Reaction Rates Experiments

Question 1

State the different reaction rate experiments

Answer 1

1. HCl + Marble Chips
2. Magnesium + HCl
3. Sodium Thiosulphate + HCl = cloudy ppt
4. Decomposition of Hydrogen Peroxide

Question 2

What happens in the HCl + Marble Chips experiment?

Answer 2

Using a gas syringe to measure the amount of gas given off by the marble chips.

Question 3

What is the formula for the HCl + Marble Chips experiment?

Answer 3

2HCl + CaCO3 → CaCl2 + CO2 + H2O

Question 4

What happens in the Magnesium + HCl experiment?

Answer 4

Balancing the mass or with the gas syringe

Question 5

What is the formula for the Magnesium + HCl experiment?

Answer 5

Mg + 2HCl → MgCl2 + H2

Question 6

What happens in the sodium thiosulphate + HCl experiment?

Answer 6

Watch the X on the paper underneath the beaker disappear.

Question 7

What is the formula for the sodium thiosulphate (Na2S2O3) + HCl experiment?

Answer 7

Na2S2O3 + 2HCl → 2NaCl + SO2 + H2O + S

Question 8

What happens in the decomposition of hydrogen peroxide experiment?

Answer 8

Measuring the amount of gas given off in the gas syringe to see if the catalyst speeds up the rate.

Question 9

What is the formula for the decomposition of hydrogen peroxide?

Answer 9

2H2O2 → 2H2O + O2