Diffusion Gr 8

The figure shows the experimental set up used to demonstrate diffusion in gases.

Which two gases are used in the experiment?

• NH₃ and HCl₂

• NH₃ and HCl

• NH₄ and HCl

• NH₄ and HCl₂

Name the product formed after the reactants hydrogen chloride and ammonia gas react

• Ammonium

• Ammonia

• Ammonium chloride

• Chloride

What is the physical state of the product formed?How do you know?

• Gas, Product is not visible

• Liquid, solution is visible

• Solid, White ring is visible

The product takes some time to form because------

• The gases takes time to diffuse.

• The gases are to be produced.

• There is no air in the tube.

In the experiment the white ring is formed closer to the-----------end.

• Ammonia gas

• Hydrochloric acid

The---------------particles are lighter than the-------particles and therefore move faster.

• Ammonia, Hydrogen chloride

• Hydrogen chloride, Ammonia

Choose the correct equation for the reaction between hydrogen chloride and ammonia gas.

• NCl₃ + 3 H₂O → NH₃ + 3 HOCl

• NH₃ + HCl → NH₄Cl

• NH4 + HCl → NH₄Cl

• NH4 + Cl → NH₄Cl

If the liquid is completely still,-----------

• there occurs no diffusion in it.

• the diffusion through the liquid is very slow.

• the diffusion through the liquid is very fast.

• the diffusion speed is same as that of moving liquid.

The particles in the liquid move more slowly than the particles in a gas.

• True

• False

The figure shows the demonstration of -----------------using potassium permanganate and water.

• diffusion in solids

• diffusion in liquids

• diffusion in gases