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Assertion : Conversion of potassium ferr...

Assertion : Conversion of potassium ferrocyanide to potassium ferricyanide is an oxidation process.
Reason : Oxidation is the addition of oxygen/electronegative element to a substance or removal of hydrogen/electropositive element from a substance.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

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The correct Answer is:
A
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Assertion : Potassium ferrocyanide is diamagnetic whereas potassium ferricyanide is paramagnetic. Reason : Crystal field splitting in ferrocyanide ion is greater than that of ferricyanide ion.

Reduction is a process wich involves (i) decrease in the oxidation number of one fo the atoms (ii) loss of oxygen or an electronegative element (iii) addition of hydrogen or an electropositive element . (iv) gain of electrons .

Knowledge Check

  • H_(2)O_(2) converts potassium ferrocyanide to ferricyanide. The change observed in the oxidation state of iron is

    A
    `Fe^(2+)rarrFe^(2+)`
    B
    `FerarrFe^(2+)`
    C
    `Fe^(3+)rarrFe^(2+)`
    D
    `Fe^(2+)rarrFe^(+)`

  • H_(2)O_(2) converts potassium ferrocyanide to ferricyanide. The change observed in the oxidation state of iron is

    A
    `Fe^(2+) rarr Fe^(3+)`
    B
    `Fe rarr Fe^(2+)`
    C
    `Fe^(3+) rarr Fe^(2+)`
    D
    `Fe^(2+) rarr Fe^(+)`

  • Assertion. Potassium ferrocyanide is diamagnetic whereas potassium ferricyanide is paramagnetic. Reason. Crystal field splitting in ferrocyanide ion is greater than that of ferricyanide ion.

    A
    If both assertion and reason are true, but reason is not the true explanation of the assertion
    B
    If both assertion and reason are true, but reason is not the true explanation of the assertion
    C
    If assertion is true, but reason is false
    D
    If both assertion and reason are false

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    Redox reactions involve simultaneous reduction-oxidation reactions. The process of oxidation involves addition of oxygen or any other electronegative element or loss of hydrogen or any other electropositive element. The reverse of this process is called reduction. Reduction also involves addition of electrons or decrease in the oxidation number an atom or ion present in a substance. Substances which bring about oxidation of other substances are called oxidants while those which bring about the reduction of other substances are called reductants. In terms of electronic concept, reductants. In terms of electronic concept, reductants are electron donors while oxidants are electron acceptors. Oxidants also involve decrease in oxidation number of one of its atoms/ions while reductants involve increase in the oxidation number of one of its atoms/ions. Oxidation numbers are always while numbers and must be always calculated on the basis of their structures and never from their molecular formulae. Redox reactants may involve combination of atoms/molecules, decomposition of substances, displacement of metals of non metals and disproportionation of a particular species which may be metals, non-metals or ions. Redox reactions can be balanced both by oxidation number method as well as by ion electron method. A compound contains atoms of three elements A, B and C. If the oxidation number of A is +2, B is +5 and that of C is -2 the possible formula of the compound is

    Redox reactions involve simultaneous reduction-oxidation reactions. The process of oxidation involves addition of oxygen or any other electronegative element or loss of hydrogen or any other electropositive element. The reverse of this process is called reduction. Reduction also involves addition of electrons or decrease in the oxidation number an atom or ion present in a substance. Substances which bring about oxidation of other substances are called oxidants while those which bring about the reduction of other substances are called reductants. In terms of electronic concept, reductants. In terms of electronic concept, reductants are electron donors while oxidants are electron acceptors. Oxidants also involve decrease in oxidation number of one of its atoms/ions while reductants involve increase in the oxidation number of one of its atoms/ions. Oxidation numbers are always while numbers and must be always calculated on the basis of their structures and never from their molecular formulae. Redox reactants may involve combination of atoms/molecules, decomposition of substances, displacement of metals of non metals and disproportionation of a particular species which may be metals, non-metals or ions. Redox reactions can be balanced both by oxidation number method as well as by ion electron method. Amongst the following, identify the species with an atom in +6 oxidation state

    Redox reactions involve simultaneous reduction-oxidation reactions. The process of oxidation involves addition of oxygen or any other electronegative element or loss of hydrogen or any other electropositive element. The reverse of this process is called reduction. Reduction also involves addition of electrons or decrease in the oxidation number an atom or ion present in a substance. Substances which bring about oxidation of other substances are called oxidants while those which bring about the reduction of other substances are called reductants. In terms of electronic concept, reductants. In terms of electronic concept, reductants are electron donors while oxidants are electron acceptors. Oxidants also involve decrease in oxidation number of one of its atoms/ions while reductants involve increase in the oxidation number of one of its atoms/ions. Oxidation numbers are always while numbers and must be always calculated on the basis of their structures and never from their molecular formulae. Redox reactants may involve combination of atoms/molecules, decomposition of substances, displacement of metals of non metals and disproportionation of a particular species which may be metals, non-metals or ions. Redox reactions can be balanced both by oxidation number method as well as by ion electron method. For the redox reaction xMnO_(4)^(-)+yC_(2)O_(4)^(2-)+zH^(+)rarrx,y and z are

    Redox reactions involve simultaneous reduction-oxidation reactions. The process of oxidation involves addition of oxygen or any other electronegative element or loss of hydrogen or any other electropositive element. The reverse of this process is called reduction. Reduction also involves addition of electrons or decrease in the oxidation number an atom or ion present in a substance. Substances which bring about oxidation of other substances are called oxidants while those which bring about the reduction of other substances are called reductants. In terms of electronic concept, reductants. In terms of electronic concept, reductants are electron donors while oxidants are electron acceptors. Oxidants also involve decrease in oxidation number of one of its atoms/ions while reductants involve increase in the oxidation number of one of its atoms/ions. Oxidation numbers are always while numbers and must be always calculated on the basis of their structures and never from their molecular formulae. Redox reactants may involve combination of atoms/molecules, decomposition of substances, displacement of metals of non metals and disproportionation of a particular species which may be metals, non-metals or ions. Redox reactions can be balanced both by oxidation number method as well as by ion electron method. In the reaction 3Br_(2)+6CO_(3)^(2-)+3H_(2)Orarr5Br^(-)+BrO_(3)^(-)+6HCO_(3)^(-) .

    Redox reactions involve simultaneous reduction-oxidation reactions. The process of oxidation involves addition of oxygen or any other electronegative element or loss of hydrogen or any other electropositive element. The reverse of this process is called reduction. Reduction also involves addition of electrons or decrease in the oxidation number an atom or ion present in a substance. Substances which bring about oxidation of other substances are called oxidants while those which bring about the reduction of other substances are called reductants. In terms of electronic concept, reductants. In terms of electronic concept, reductants are electron donors while oxidants are electron acceptors. Oxidants also involve decrease in oxidation number of one of its atoms/ions while reductants involve increase in the oxidation number of one of its atoms/ions. Oxidation numbers are always while numbers and must be always calculated on the basis of their structures and never from their molecular formulae. Redox reactants may involve combination of atoms/molecules, decomposition of substances, displacement of metals of non metals and disproportionation of a particular species which may be metals, non-metals or ions. Redox reactions can be balanced both by oxidation number method as well as by ion electron method. A mole of N_(2)H_(4) loses 10 moles of electrons to forn a new compound Y. Assuming that all the nitrogen appears in the new compound, what is the oxidation rate of nitrogen in Y ? (There is no change in the oxidation number of hydrogen)

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