Redox Reactions

On complete reaction of FeCl3 with oxalic acid in aqueous solution containing KOH, resulted in the formation of product A. The secondary valency of Fe in the product A is ______.

15 mL of aqueous solution of Fe²⁺ in acidic medium completely reacted with 20 ml of 0.03 M aqueous Cr₂O₇^2-. The molarity of the Fe²⁺ solution is _______ *10^-2 M (Round off to the nearest integer).

At 20.0 mL solution containing 0.2 g impure H2O2 reacts completely with 0.316 g of KMnO4 in acid solution. The purity of H2O2 (in %) is (mol. wt. of H2O2 = 34; mol. wt. of KMnO4 = 158 )

Consider the following equations :
2Fe²⁺ + H₂O₂ → xA + yB (in basic medium)
2MnO₄⁻ + 6H⁺ + 5H₂O₂ → x'C + y'D + z'E (in acidic medium)
The sum of the stoichiometric coefficients x, y, x', y' and z' for products A, B, C, D and E, respectively, is

On heating, lead (II) nitrate gives a brown gas (A). The gas (A) on cooling changes to a colourless solid/liquid (B). (B) on heating with NO changes to a blue solid (C). The oxidation number of nitrogen in solid (C) is:

If you spill a chemical toilet cleaning liquid on your hand, your first aid would be:

Consider the following reactions A→P1; B→P2; C→P3; D→P4.

The order of the above reactions are a,b,c and d, respectively. The following graph is obtained when log[rate] vs log[conc.] are plotted.

 Among the following, the correct sequence for the order of the reactions is:

The variation of equilibrium constant with temperature is given below:
Temperature: T₁=25°C, T₂=100°C
Equilibrium Constant: K₁=10, K₂=100
The value of ∆H°, ∆G° at T₁ and ∆G° at T₂ (in kJmol⁻¹) respectively, are close to
[Use R=8.314JK⁻¹mol⁻¹]

Given that the standard potential (E°) of Cu²?/Cu and Cu?/Cu are 0.34 V and 0.522 V respectively, the E° of Cu²?/Cu? is

The volume, in mL, of 0.02M K₂Cr₂O₇ solution required to react with 0.288 g of ferrous oxalate in acidic medium is (Molar mass of Fe = 56 mol⁻¹)