What Volume At STP Of Gaseous Ammonia Will Be Required To Be Passed Into 100mL Of 0.5 M H2SO4 to Bring Down Its Strength To 0.25 M?

5 mol of mixture of Mohr’s salt and Fe₂(SO₄)₃ requires 500mL of MK₂Cr₂O₇ for complete oxidation in acidic medium. The mole % of the Mohr’s salt in the mixture is

For the reaction : 2H₃PO₂ → H₃PO₄ +PH₃ , the equilvant mass of H₃PO₂ is

1 mole of equimolar mixture of ferric oxalate and ferrous oxalate will require x mol of KMnO₄ in acidic medium for complete oxidation. x is

If x g is the mass of NaHC₂O₄ required to neutralize 100 mL of 0.2 MNaOH and y g that required to reduce 100 mL of 0.02 M KMnO₄ in acidic medium, then

A mixture of K₂C₂O₄ and KHC₂O₄ required equal volumes of 0.1 M K₂Cr₂O₇ for oxidation and 0.1 M NaOH for neutralization in separate titrations. The molar ratio of K₂C₂O₄ and KHC₂O₄ in the mixture is :

An equilmolar mixture of Na₂C₂O₄ and H₂C₂O₄ required V₁L of 0.1 M KMnO₄ in acidic medium for complete oxidation. The same amount of the mixture required V₂L of 0.1 M NaOH for neutralization. The ratio of V₁ to V₂ is

In an iodometric estimation, the following reactions occur

0.15 mol of CuSO₄ of 80% purity was added to excess of KI solution and the liberated iodine required 12 mL 120mL of hypo. The molarity of hypo solution was

A mixture of NaOH and Na₂CO₃ required 25mL of 0.1 M HCl using phenolphthalein as indicator. However, the same amount of the mixture required 30mL of 0.1 M HCl when methyl orange was used as the indicator. The molar ratio of NaOH and Na₂CO₃ in the mixture was

A 1.70 g sample of H₂O₂ solution containing x% H₂O₂ by mass requires xmL of KMnO₄ solution for complete oxidation under acidic condition. The molarity of KMnO₄ solution is

20 mL of a solution containing Na₂CO₃ and NaHCO₃ requires 10 mL of 0.1 N H₂SO₄ for neutralization using phenolphthalein as an indicator. Methyl orange is then added when a further 10 mL of 0.2 N H₂SO₄ is required. Molar concentration of Na₂CO₃ and NaHCO₃ in the solution respectively are