Mno4_ ions are reduced in acidic conditions to Mn2+ ions where they ar...
Introduction:
In this scenario, we have a solution x containing Fe2+ ions that need to be oxidized. The oxidation can be carried out in two different conditions - acidic and neutral. The volume of solution x is given as 25 ml, and we need to determine the volume of solution y containing MnO4- ions required for the oxidation in both conditions.
Acidic Conditions:
In acidic conditions, MnO4- ions are reduced to Mn2+ ions. The balanced equation for this reaction is:
MnO4- + 8H+ + 5e- → Mn2+ + 4H2O
To balance the equation, we need 5 moles of electrons for each mole of MnO4-.
Given that the volume of solution x is 25 ml, we can calculate the number of moles of Fe2+ ions present:
n(Fe2+) = (25 ml) / (1000 ml/mol) * C(Fe2+)
To balance the equation, the number of moles of MnO4- required is equal to the number of moles of Fe2+:
n(MnO4-) = 5 * n(Fe2+)
Now, let's calculate the volume of solution y containing MnO4- ions required:
V(MnO4-) = (n(MnO4-) / C(MnO4-)) * 1000 ml
Neutral Conditions:
In neutral conditions, MnO4- ions are reduced to MnO2. The balanced equation for this reaction is:
MnO4- + 4H2O + 3e- → MnO2 + 8OH-
To balance the equation, we need 3 moles of electrons for each mole of MnO4-.
The number of moles of MnO4- required is the same as in the acidic conditions:
n(MnO4-) = 5 * n(Fe2+)
Now, let's calculate the volume of solution y containing MnO4- ions required in neutral conditions:
V(MnO4-) = (n(MnO4-) / C(MnO4-)) * 1000 ml
Conclusion:
In conclusion, we have determined the volume of solution y containing MnO4- ions required to oxidize solution x containing Fe2+ ions in both acidic and neutral conditions. The volume of solution y is calculated based on the stoichiometry of the balanced equations for each condition. Remember to use the appropriate molar concentrations (C) of the respective ions to calculate the volumes accurately.
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