Question

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?

Solution

Correct option is

1.120 L

 

Mol of H2SO4 neutralised =(0.5 – 0.25) × 100 × 10–3 = 0.025

Mol of NH3 needed = 2×0.025 = 0.05

Volume of NH3 at STP = 0.05×22.4 = 1.12 L

SIMILAR QUESTIONS

Q1

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

Q2

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

Q3

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

Q4

If 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 KMnO4 in acidic medium, then

Q5

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 :

Q6

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

Q7

 

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

Q8

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

Q9

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

Q10

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