Redox Reactions questions
1186 published questions with worked solutions.
- Consider the following reaction : xMnO_4^- + yC_2O_4^ 2- + zH^+ xMn^ 2+ + 2yCO_2 + z 2 H_2O The values of x, y and z in the...
- Given E^0_ Cr^ 3+ /Cr = -0.74 V; E^0_ MnO_4^-/Mn^ 2+ = 1.51 V E^0_ Cr_2O_7^ 2- /Cr^ 3+ = 1.33 V; E^0_ Cl/Cl^- = 1.36 V Based on...
- MnO_4^ 2- , in acidic medium, disproportionates to :
- Identify the correct statements : A. Hydrated salts can be used as primary standard. B. Primary standard should not undergo any...
- x mg of pure HCl was used to make an aqueous solution. 25.0 mL of 0.1M , Ba(OH)_2 solution is used when the HCl solution was...
- The oxidation state of chromium in the final product formed in the reaction between KI and acidified K_2Cr_2O_7 solution is:
- X and Y are the number of electrons involved, respectively during the oxidation of I^- to I_2 and S^ 2- to S by acidified...
- 500 mL of 1.2 M KI solution is mixed with 500 mL of 0.2M KMnO_4 solution in basic medium. The liberated iodine was titrated with...
- Consider the following redox reaction taking place in acidic medium BH_4^-(aq) + ClO_3^-(aq) H_2BO_3^-(aq) + Cl^-(aq) If the...
- The species which does not undergo disproportionation reaction is :
- Based on the data given below : E^0_ Cr_2O_7^ 2- /Cr^ 3+ = 1.33V, E^0_ Cl_2/Cl^- = 1.36V, E^0_ MnO_4^-/Mn^ 2+ = 1.51V, E^0_ Cr^...
- Statement I : In the oxalic acid vs KMnO_4 (in the presence of dil H_2SO_4) titration the solution needs to be heated initially...
- Match the List-I with List-II List-I (Redox Reaction): (A) CH_4(g) + 2O_2(g) CO_2(g) + 2H_2O(l) (B) 2NaH(s) 2Na(s) + H_2(g) (C)...
- Which of the following oxidation reactions are carried out by both K_2Cr_2O_7 and KMnO_4 in acidic medium ? A. I^- I_2 B. S^ 2- S...
- The standard reduction potential values of some of the p-block ions are given below. Predict the one with the strongest oxidising...
- Given below are two statements: Statement I: CrO_3 is a stronger oxidizing agent than MoO_3. Statement II: Cr(VI) is more stable...
- Compounds that should not be used as primary standards in titrimetric analysis are : A. Na_2Cr_2O_7 B. Oxalic acid C. NaOH D....
- KMnO4 acts as an oxidising agent in acidic medium. "X" is the difference between the oxidation states of Mn in reactant and...
- In which of the following reactions H_2O_2 acts as a reducing agent? (a) H_2O_2 + 2H^+ + 2e^- 2H_2O (b) H_2O_2 - 2e^- O_2 + 2H^+...
- Given E^ _ Cl_2/Cl^- = 1.36 V, E^ _ Cr^ 3+ /Cr = -0.74 V E^ _ Cr_2O_7^ 2- /Cr^ 3+ = 1.33 V, E^ _ MnO_4^-/Mn^ 2+ = 1.51 V, Among...
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