module 2 chaper 3

Question 1

concentration?

Answer 1

The amount of solute dissolved in each 1dm3 of solution

Question 2

Molar gas volume?

Answer 2

Vm, the volume occupied by one mole of any gas at RTP= 24dm3

Question 3

ideal gas equation?

Answer 3

pV=nRT

Question 4

Kelvin?

Answer 4

°c+273

Question 5

ideal gas constant (R)

Answer 5

8.314 J mol^-1 kg^-1

Question 6

stoichiometry?

Answer 6

The reacting ratio in moles of each substance (from the balances equation)

Question 7

Water of crystallization

Answer 7

Water molecules bonded into the crystalline structure of a compound

Question 8

Anhydrous salt

Answer 8

Structure containing no water of crystallization

Question 9

Standard solution?

Answer 9

A solution of known concentration
Exact mass of solute dissolved in a solvent made up to an exact volume using a volumetric flask

Question 10

how can 100% atom economy be achieved?

Answer 10

By making all the products desired, therefore useful.
With a reaction that has only one product

Question 11

what can prevents reaching the theoretical yield?

Answer 11

Side reactions, purification of the product can cause loss, incomplete reaction

Question 12

relative molecular mass

Answer 12

the mass of a molecule relative to 1/12th the mass of an atom of carbon 12

Question 13

relative formula mass

Answer 13

the mass of a formula unit relative to 1/12th the mass of an atom of carbon 12. applies to compound which exist as giant structures

Question 14

avogadros constant?

Answer 14

the number of atoms in 12g of the carbon 12 isotope: 6.02×10^23

Question 15

molar mass

Answer 15

mass of one mole of a substance (molg^-1)

Question 16

hydrated salt

Answer 16

crystalline (solid) ionic compound containing water molecules