Description
Complete Virtual Lab on Acid Base Chemistry (Titrations)
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Complete simple lab report based on outline attached and include all information from virtual lab as required.
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Explanation & Answer
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Date
Name
Title: Titration
HYPOTHESIS: Titration of both weak acids and strong acids records similar Ph at the
equivalent position
PROCEDURES
PART ONE
The purpose of the experiment is to titrate a strong acid with a strong base until an expected
endpoint is achieved. This is when the two reactants stop reacting. The reactants in this
experiment will be HBr which is a strong acid and KOH which is a strong base.
1. What happens chemically when HBr and KOH combine is that there is a neutralization
reaction.
2. The balanced equation of the reaction is
HBr(aq) + KOH(aq) ---> KBr(aq) + H20(l)
Full ionic equation:
H+(aq) + Br-(aq) → K+(aq) + OH-(aq) → K+(aq) + Br-(aq) + H2O(l)
Net ionic equation
H+(aq) + OH-(aq) → H2O(l)
3. As KOH is added to the flask, the molar amount of OH- it supplies will react with a greater
molar quantity of H+, until at a point where the acid is completely neutralized. This is shown by
the change of color
F.3.The pH of the flask solution rises as you continue adding KOH since it is a strong base
4. The equivalence point is where all the starting solution which is usually an acid has been
neutralized by the titrant usually a base. In this case the pH is 7.0
RESULTS
5.table 1
Initial ions
H+
Equivalelnce point
none
Final point
OH-
6. There are no OH- present in the falsk since there are more H+ from the acid
7. After the equivalence point, neutralization of the acid occurs therefore there are more OH8.Titration curve 1. of KOH and HBr-
10.G.table 2
Initial
Final
Br-
50
50
KOH
0.0
11.4
PART 2
Titration of weak acid...