Identifying Rates of Reactions with Different Factors – Lab Report – pleasantries
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Identifying Rates of Reactions with Different Factors
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)
514.2
2.917*10^-5
120.97
1.24*10^-4
24.32
0.000617
21.87
0.000686
Part 2 = Different temperatures of solution
Temperature
Reaction Time(s)
Reaction Rate (g Mg/s)
18.67
8.034*10^-4
25.43
5.898*10^-4
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
12.91
0.023
Solid CaCO3
600.00
0.00081
Part 4 = Natural Behaviour of reactants
Reactants
Reaction Time(s)
Reaction Rate (s-1)
FeSO4 + KMnO4 + H2SO4
instantaneous
Na2C2O4 +KMnO4 + H2SO4
slowly
Part 5 = Catalysed and uncatalysed
Reaction Time(s)
Reaction Rate (s-1)
With Mn+2 catalyst
instantaneous
Without Mn+2 catalyst
slowly
Analysis:
Part 1
Our first experiment was to compare different concentrations of hydrochloric acid and determine the rate of reaction. We dropped four pieces of magnesium which weighed 0.015 grams each into four different flasks which contained the same solution. The only difference was the molarity in each solution. The first flask had 0.5M, the second had 1.0M, the third had 3.0M and the fourth had 6.0M. Our reaction rates were 2.917*10^-5g/s, 1.24*10^-4g/s , 0.000617g/s, 0.000686g/s from first flask to fourth. From these results, we can obviously see the higher the concentration, the faster the rate of reaction. An example proving this is the first flask compared to the fourth. The first flask had a rate of 2.917*10^-5g/s whereas the fourth had a rate of 0.000686g/s. The fourth flask has a significantly faster rate of reaction due to the higher concentration of molecules
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By: pleasantries
Submitted: November 16, 2018
Essay Length: 795 Words / 4 Pages
Paper type: Lab Report Views: 286
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