The Values Of x and y in The Following Redox Reaction,

0.2 of sample H₂O₂ reduced 20 ml of 0.1 M KMnO₄ solution in acidic medium. What is the percentage purity of H₂O₂?

16.6 g of pure potassium iodide was dissolved in water and the solution was made up to one litre. V cm³ of this solution was acidified with 20 cm³of 2 M HCl. The resulting solution required 10 cm³ of decinormal KIO₃for complete oxidation of I^– ions to ICl. Find out the value of V.

Both  (aq) can be used to titrate Fe²⁺ (aq). If in a given titratoion, 24.50 cm³ of 0.1 M  were used, then what volume of 0.1 M  solution would have been used for the same titration?

1.1 g of a sample of copper ore is dissolved and Cu²⁺ (aq) is treated with KI. The iodine thus liberated required 12.12 cm³ of 0.1 M Na₂S₂O₃solution for titration. What is the percentage of copper in the ore?

Oxidation number of sodium in sodium amalgam is

In the given reaction,

X, Y, Z are

Which will be the proper alternative in place of A in the following equation.

Number of moles of K­_2­Cr₂O₇ reduced by 1 mole of Sn²⁺ is

In the standardization of Na₂S₂O₃ using K₂Cr₂O₇ by iodometry, the equivalent weight of K₂Cr₂O₇ is

When KMnO₄ acts as an oxidising agent and ultimately forms , then the number of electrons transferred in each case respectively is