# Identifying Rates of Reactions with Different Factors

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Identifying Rates of Reactions with Different Factors

Objective:

To test what factors can significantly affect the efficiency of a reaction.

Reactions for the lab:

(part 1/2) = Mg + 2HCl → MgCl2 + H2

(part 3) = CaCO3 + 2HCl → CaCl2 + H2O + CO2

(part 4) = 10FeSO4 + 2KMnO4 + 8H2SO4 → 5Fe2(SO4)3 + 2MnSO4 + K2SO4 + 8H2O

2KMnO4 + 5Na2C2O4 + 8H2SO4 → K2SO4 + 2MnSO4 + 5Na2SO4 + 8H2O + 10C02

(part 5) = the sodium oxalate reaction plus MnSO4

Observations:

Part 1 = Different levels of concentration in molarity

Concentration of HCl

Reaction Time(s)

Reaction Rate (g Mg/s)

0.5M

514.2

2.917*10^-5

1.0M

120.97

1.24*10^-4

3.0M

24.32

0.000617

6.0M

21.87

0.000686

Part 2 = Different temperatures of solution

Temperature

Reaction Time(s)

Reaction Rate (g Mg/s)

100C

18.67

8.034*10^-4

50C

25.43

5.898*10^-4

20C

36.21

4.1425*10^-4

Part 3 = Difference in surface area

Reactant

Mass CaCO3 (g)

Reaction Time(s)

Reaction Rate (g CaCO3/s)

Powdered CaCO3

0.30

12.91

0.023

Solid CaCO3

0.49

600.00

0.00081

Part 4 = Natural Behaviour of reactants

Reactants

Reaction Time(s)

Reaction Rate (s-1)

FeSO4 + KMnO4 + H2SO4

instantaneous

N/A

Na2C2O4 +KMnO4 + H2SO4

slowly

N/A

Part 5 = Catalysed and uncatalysed

Reaction Time(s)

Reaction Rate (s-1)

With Mn+2 catalyst

instantaneous

N/A

Without Mn+2 catalyst

slowly

N/A

Analysis:

Part 1