Redox Reactions questions
1186 published questions with worked solutions.
- The lowest oxidation number of an atom in a compound A_2B is –2. The number of electrons in its valence shell is _______.
- Only 2 mL of KMnO_4 solution of unknown molarity is required to reach the end point of a titration of 20 mL of oxalic acid (2 M)...
- The metal that shows highest and maximum number of oxidation state is:
- Oxidation number of potassium in K_2O , K_2O_2 and KO_2 , respectively, is :
- The strength of an aqueous NaOH solution is most accurately determined by titrating : (Note : consider that an appropriate...
- The oxidation states of transition metal atoms in K_2Cr_2O_7 , KMnO_4 and K_2FeO_4 , respectively, are x, y and z. The sum of x,...
- The number of ions from the following that are expected to behave as oxidising agent is: Sn⁴⁺, Sn²⁺, Pb²⁺, Tl³⁺, Pb⁴⁺, Tl⁺
- Match List-I with the List-II List-I (Reaction): (A) N₂(g) + O₂(g) → 2NO(g) (B) 2Pb(NO₃)₂(s) → 2PbO(s) + 4NO₂(g) + O₂(g) (C)...
- While titrating dilute HCl solution with aqueous NaOH, which of the following will not be required?
- The oxidation states of iron atoms in compounds (A), (B) and (C), respectively, are x, y and z. The sum of x, y and z is________....
- The volume strength of 8.9 M H_2O_2 solution calculated at 273 K and 1 atm is _______. (R = 0.0821 L atm K ^ -1 mol ^ -1 )...
- Thiosulphate reacts differently with iodine and bromine in the reaction given below: 2S₂O₃²⁻ + I₂ → S₄O₆²⁻ + 2I⁻ and S₂O₃²⁻ +...
- Iron (III) catalyses the reaction between iodide and persulphate ions, in which A. Fe³⁺ oxidises the iodide ion B. Fe³⁺ oxidises...
- A 20.0 mL solution containing 0.2 g impure H_2O_2 reacts completely with 0.316 g of KMnO_4 in acid solution. The purity of H_2O_2...
- Consider the following equations: 2Fe^ 2+ +H_2O_2 xA+yB (in basic medium) 2MnO_4^-+6H^++5H_2O_2 x'C+y'D+z'E (in acidic medium)...
- The volume, in mL, of 0.02 M K_2Cr_2O_7 solution required to react with 0.288 g of ferrous oxalate in acidic medium is_______....
- Which reaction is **NOT** a redox reaction?
- What is the change in oxidation number of carbon in the following reaction ? CH _4(g)+4 Cl _2(g) CCl _4(l)+4 HCl (g)
- In the neutral or faintly alkaline medium, KMnO_4 oxidises iodide into iodate. The change in oxidation state of manganese in this...
- Which reaction is NOT a redox reaction?
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