Chemistry Cha 12 Electrochemistry 11th Notes KPK

Chemistry Cha 12 Electrochemistry 11th Notes KPK

Short Questions Electrochemistry11th Notes for kpk

Q.6 i) What is the oxidation number of N in N2O, NO2, N2O3, HNO3 and NH4+.

Chemistry 11th Notes for KPK Long Questions

Q.2) Balance the following Redox Equations by Oxidation Number Method

i. KMnO4 + H2S + H2SO4 → KHSO4 + MnSO4 + S + H2Obr /br
i. KMnO4 + H2S + H2SO4 → KHSO4 + MnSO4 + S + H2Obr /br
(iv) Indicating the change in oxidation number by means of arrows.
(iv) Indicating the change in oxidation number by means of arrows.
Hence the substances reduced and oxidized are written as follows.
Hence the substances reduced and oxidized are written as follows.
Multiplying equation (a) by 2 and equation (b) by 3 so in order to balance the number of electrons lost and gained.
Multiplying equation (a) by 2 and equation (b) by 3 so in order to balance the number of electrons lost and gained.
 Indicating the change in oxidation numbers by means of arrows.
 Indicating the change in oxidation numbers by means of arrows.

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