Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AIIMS2001ChemistrySome Basic Concepts of Chemistry

How many litres of ammonia gas at S.T.P. would be needed to prepare 100 ~mL of 2.5 M ammonium hydroxide solution?

Options

  1. A5.6 ~L
  2. B0.056 ~L
  3. C11.2 ~L
  4. D0.56 ~L

Correct answer

A. 5.6 ~L

Step-by-step solution

Molecular weight of NH ₄ OH =35 Now, 35 ~g of NH ₄ OH is needed to prepare 1 M solution in 1 litre 35 ~g NH ₄ OH in 1 ~L solution 1 molar solution 2.5 35 ~g NH ₄ OH in 1 ~L solution 2.5 molar solution aligned & 2.5 35 10 ~g NH ₄ OH is 100 ~mL solution 2.5 molar solution & 8.75 ~g NH ₄ OH was dissolved. & NH ₃+ H ₂ O NH ₄ OH & For 35 ~g NH ₄ OH , NH ₃ needed =22.4 ~L at S.T.P & for 8.75 ~g NH ₄ OH , NH ₃ needed = 22.4 35 8.75 ~L &=5.6 ~L aligned

Practice Some Basic Concepts of Chemistry on Quantrex Academy →

More from Some Basic Concepts of Chemistry

Calculate the mass of potassium chlorate required to liberate 6.72 dm ^3 of oxygen at STP. [Molar mass of potassium chlorate = 122.5 g mol ⁻¹ ] 2026Find the mass of lime obtained by heating 500 g of 90 % pure lime stone. [Molar masses Ca =40 g/mol, O =16 g/mol & C =12 g/mol] 2026A coordination complex contains 2.6 % of Mg. Find the number of Mg atoms in 5.0 g of this sample. (gram atomic mass of Mg = 24 g ) 2026Calculate the number of moles and molecules of chlorine in 4.48 dm ^3 of chlorine at STP. 2026What is the gram atomic mass of an element whose mass of one atom is 3.9853 10⁻²³ g ? 2026Calculate the total mass and number of molecules present in 3 moles of benzene. 2026Which of the following gases has high vapour density at same temperature and pressure? 2026What is the number of moles of Cl atoms present in n moles of tear gas and in n moles of mustard gas respectively? 2026 Full Some Basic Concepts of Chemistry list All AIIMS PYQs