Redox Reactions questions
1186 published questions with worked solutions.
- Complex Cr(NH_3)_xCl_3 (A) is titrated with 1.5 M HCl. 40 mL of HCl are required to titrate 2.635 g of A. Thus x is ___________
- When potassium hydrogen oxalate ( KHC _2 O _4) is oxidised by acidified KMnO _4 into CO _2, what is the n-factor (number of...
- 22.4 L is the volume of how many equivalent(s) of O_2 gas at NTP?
- How much water should be added to 1 mL of 1 M KMnO_4 solution so that it is 0.5 N in a titration in acidic medium?
- 1 M MnO_4^- solution is x equiv. L^ -1 when reduced to Mn^ 2+ . Thus, x is ___________
- 1 M Cr_2O_7^ 2- solution is y equiv. L^ -1 . Thus, y is ___________
- 100 mL of 1 M KMnO_4 solution is reduced by 150 mL of 1 M C_2O_4^ 2- . What is the oxidation state of the manganese salt formed?
- Na_2S_2O_4 reduces CrO_4^ 2- to Cr(OH)_3. How many moles of Na_2S_2O_4 are required by 100 L of waste water having [ CrO _4^ 2-...
- 100 mL of 0.01 M XO_4^- is reduced to X^ n+ by 100 mL of 0.05 M Fe^ 2+ in acidic medium. Thus, oxidation state of X in X^ n+ is...
- 25 mL of a solution containing 6.1 g L^ -1 of an oxalate of formula K_xH_y(C_2O_4)_z nH_2O required 18 mL of 0.1 N NaOH and 24 mL...
- 25 mL of 0.1 M solution of metallic salt (A) oxidises 25 mL of 0.1 M sodium sulphite to sodium sulphate. If the oxidation number...
- C_2O_4^ 2- can be oxidized to CO_2 by MnO_4^-/H^+ as well as MnO_4^-/OH^-. The ratio of moles of MnO_4^- required per mole of...
- 100 mL of 1 M oxalic acid reduces 100 mL of 1 M MnO_2. What is the change in O.N. of Mn?
- What is the equivalent weight of ozone if it is estimated iodometrically?
- 10.2 g of H_2O_2 of x% purity requires x mL of KMnO_4 in basic medium. What is the molar concentration of KMnO_4?
- 2 moles of MnO_4^- oxidize how many moles of NaHC_2O_4 (acidic medium)?
- 20 mL of 1 M MnO_4^- are required in acidic medium and 100 mL of 1 M MnO_4^- are required in neutral medium for a redox titration...
- SO_2 turns acidified K_2Cr_2O_7 solution green. Oxidation number of the green-coloured ion is ___________
- To neutralise 20 mL of M/10 NaOH, the volume of M/20 HCl needed is:
- The volume of 0.1 M H_2SO_4 required to neutralise 30 mL of 2.0 M NaOH is:
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