Explain what the equilibrium constant can tell us about a chemical process. For
ID: 805777 • Letter: E
Question
Explain what the equilibrium constant can tell us about a chemical process.
For the solutions that you will prepare in Step 2 of Part I below, calculate the [FeSCN2+] (square brackets indicate concentration). Presume that all of the SCN ions react. In Part I of the experiment, mol of SCN = mol of FeSCN2+. Record these values in the table below.
Beaker number
[FeSCN2+]
1
2
3
4
Beaker
0.0020 M Fe(NO3)3 (mL)
0.0020 M SCN (mL)
H2O (mL)
A
3.00
3.00
4.00
B
3.00
4.00
3.00
C
3.00
5.00
2.00
Beaker number
[FeSCN2+]
1
2
3
4
Explanation / Answer
Question 1.
Explain what the equilibrium constant can tell us about a chemical process.
The equilibriumc an tell us several things.
If the reaction favours products or reactants
If the reaction will be in equilibrium
It relates concentrations of products/reactatns, so we can relate these to numerical values
if K< 1, then this favours reactants
if K <<<1, this will not go in forward direction
if K>1 then this favours products
if K>>1 this will go in forward direction strongly i.e. high conversion rate
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