EL 9 Acids, Alkalis and Bases

Question 1

What are the units for counting atoms?

Answer 1

Moles

Question 2

Avogadro’s Number

Answer 2

6.02 x 10^23

Question 3

1 mole can be defined as…?

Answer 3

The number of atoms in 12g of a Carbon 12 Isotope

Question 4

Formula for calculating moles

Answer 4

Moles = Mass / Mr

Question 5

Standard conditions for moles in a gas

Answer 5

298 K / 25 C

100 kPa

Question 6

1 mole of any gas occupies…?

Answer 6

24dm^3

Question 7

Formula for gas moles at different temperatures and pressures

Answer 7

p x V = n x R x T

p = Pressure
V = Volume
n = Number of Moles
R = Gas Constant (8.134)
T = Temperature

Question 8

Moles of an aqueous solution

Answer 8

Moles = Volume x Concentration / 1000