Redox Reactions questions
1186 published questions with worked solutions.
- 10 g of bleaching powder on reaction with KI required 100 mL of 1 N hypo. Thus, % of pure bleaching powder is
- In the conversion of BrO3⁻ to BrO4⁻
- In the following reaction, XeF2 + BrO3⁻ + H2O → BrO4⁻ + Xe + 2HF
- In the conversion of Br⁻ to BrO2⁻
- There are two types of sulphur with different oxidation states in the thiosulphate ion. The difference in oxidation states is...
- How many of the following have the underlined atoms in different oxidation states? K2HgI4, CaOCl2, Na2S2O3, Na2S4O6, H2SO5,...
- Br− and BrOx− in acidic medium form Br2, where x = _____.
- How many of the following can be an oxidizing agent? H2S, H2SO4, H2SO3, H2S2O3
- SO2 reduces Cr2O7²⁻ to Cr3+. The (total) change in oxidation number of Cr (per mole of dichromate) is _____.
- 3Cl2 + xNaOH → NaCl + NaClO3 + ... , x is _____.
- The species that undergoes disproportionation in an alkaline medium are
- Oxidation state of Fe in Fe_3O_4 is
- The pair of compounds having metals in their highest oxidation state is
- K_3[Fe(CN)_6] is used as an external indicator in the dichromate estimation of Fe^ 2+ . Following change is observed
- In which case(s) there is change in oxidation number
- K_2Cr_2O_7/H^+ changes to green by
- Some of the following reagents are used as primary standard. I: KMnO_4; II: NaOH; III: K_2Cr_2O_7; IV: FeSO_4 (NH_4)_2SO_4 6H_2O;...
- CuSO_4 can be estimated volumetrically
- Arrange VO_2^+, Cr_2O_7^ 2- and MnO_4^- in increasing oxidizing power.
- MnO_4^ 2- (1 mol) in neutral aqueous medium disproportionates to
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