Concept explainers
A solution contains both iron(II) and iron(III) ions. A sample Of the solution is titrated with 35.0 ml, of M
Interpretation:
The concentration of
Concept introduction:
Number of moles is equal to the ratio of given mass to the molar mass.
The mathematical expression is given by:
Number of moles =
Molarity is defined as the ratio of number of moles of solute to the volume of the solution in liters.
The mathematical expression is given by:
Molarity =
A solution of salt of metal when reacts with other solution to give products, the formula which is used to find the volume of either solution is given by:
Where, M1 and M2 are molarity of the solution
V1 and V2 are volume of the solution
Answer to Problem 74QAP
Concentration of
Concentration of
Explanation of Solution
Given information:
Volume of sample = 50.0 mL
Volume of
Molarity of
The resulting solution titrated with:
Volume of
Molarity of
The given reaction is:
Divide the above redox reaction into two half reactions that is oxidation half reaction and reduction half reaction.
Oxidation Half reaction:
Reduction half reaction:
Assign oxidation states to each element in the above reactions.
Oxidation Half reaction:
Reduction half reaction:
Balance the elements except oxygen.
Oxidation Half reaction:
Reduction half reaction:
Now, add number of electrons (required) to that side of reaction where reduction occurs.
Oxidation Half reaction:
Reduction half reaction:
Balance the charge by adding
Oxidation Half reaction:
Reduction half reaction:
Balance the hydrogen and oxygen atoms by adding water molecules.
Oxidation Half reaction:
Reduction half reaction:
Multiply the oxidation half reaction with 5 to balance the number of electrons in both reactions.
Oxidation Half reaction:
Reduction half reaction:
Now, add both reactions.
Now,
Molarity =
Convert the volume in mL to L.
Since, 1 L = 1000 mL
Thus, volume in L =
Number of moles of
Number of moles = 0.0280 M× 0.035 L =
According to the reaction, the ratio between
Thus, number of moles of
When the resulting solution titrated again:
Convert the volume in mL to L.
Since, 1 L = 1000 mL
Thus, volume in L =
Number of moles of
According to the reaction, the ratio between
Thus, number of moles of
Number of moles of
Concentration of
Convert the volume in mL to L.
Since, 1 L = 1000 mL
Thus, volume in L =
Concentration of
Concentration of
Concentration of
Concentration of
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Chapter 4 Solutions
Owlv2, 4 Terms (24 Months) Printed Access Card For Masterton/hurley's Chemistry: Principles And Reactions, 8th
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