What effect will the number of particles and temperature have on the rate of diffusion of gas molecules?

a.

the rate of diffusion decreases with the increase in number of particles and temperature.

ob.

the rate of diffusion increases with the increase in number of particles and temperature.

oc.

the rate of diffusion increases with the increase in number of particles and decrease in temperature.

o

d.

the rate of diffusion decreases if the number of particles and temperature are kept constant.

e.

the rate of diffusion increases if the number of particles and temperature are kept constant.

option B - The rate of diffusion increases with the increase in number of particles and temperature.

Explanation:

Gases belong to the states of matter. They are made up of particles loosely attached, and traveling through the entire space of their containing vessel. These travels is known as DIFFUSION.

An INCREASE in TEMPERATURE and PARTICLES would DEFINITELY increase rate of TRAVEL (as particles tends to escape through any available space).

For Example: You must have noticed that on blowing more air into a BALLOON, It tends to burst. So, also heating a gas containing vessel, it EXPANDS and soon burst.

So, the RIGHT ANSWER is option B

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g