Hcl and nh3 react to form a white solid, nh4cl. if cotton plugs saturated with aqueous solutions of each are placed at the ends of a glass tube 60.0 cm long, calculate the distance from the hcl end that the white solid will form.

24.4 cm.

Explanation

HCl and NH₃ reacts to form NH₄Cl immediately after coming into contact. Where NH₄Cl is found is the place the two gases ran into each other. To figure out where the two gases came into contact, you'll need to know how fast they move relative to each other.

The speed of a HCl or NH₃ molecule depends on its kinetic energy.

Where

is the kinetic energy of the molecule, its mass, and the square of its speed.

Besides, the kinetic theory of gases suggests that for an ideal gas,

where its temperature in degrees kelvins. The two quantities are directly proportional to each other. In other words, the average kinetic energy of molecules shall be the same for any ideal gas at the same temperature. So is the case for HCl and NH₃

Where

, , and the mass, speed, and kinetic energy of an HCl molecule;, , and the mass, speed, and kinetic energy of a NH₃ molecule.

The ratio between the mass of an HCl molecule and a NH₃ molecule equals to the ratio between their molar mass. HCl has a molar mass of 35.45; NH₃ has a molar mass of 17.03. As a result, . Therefore:

The average speed NH₃ molecules would be  if  the average speed of HCl molecules is 1.

Idid the calculation and i get 875,000,000 which can be written as 8.75 x 10^6?

What are the choices?