Chemical Calculations - Reacting Volumes Of Gasses

Question 0

What is absolute zero on both the Celsius and Kelvin scales?

Answer 0

Absolute zero = 0°K or -273°C

Question 1

What does the volume of a mole (or any fixed quantity) of gas depend on?

Answer 1

On its temperature and its pressure

Question 2

What is 0°C expressed on the Kelvin scale?

Answer 2

273K

Question 3

What is the standard conditions for a reaction (s.t.p)?

Answer 3

273K and 1atmosphere(atm) pressure.

Question 5

How do you convert between dm^3 and cm^3?

Answer 5

By dividing by 1000

Question 6

What is 1atm pressure in Pa (pascals)

Answer 6

1.01*10^5

Question 7

Explain and give a value for the Molar Gas Volume?

Answer 7

If one mole of any molecule’s gaseous atoms (at s.t.p) is taken then it will fill exactly 22.4dm^3

Question 13

What is the combined gas law and its use?

Answer 13

(P1V1)/T1 = (P2V2)/T2

With temperatures in Degrees Kelvin

To find the molar gas volume at any other temperature and pressure.

Question 14

What are the conditions at r.t.p (room temprature and pressure)

Answer 14

298K and 1.01*10^5pa pressure