Moles

Question 1

Avogadros constant

Answer 1

• one mole contains 6.02x10²³ elementary entities

Question 2

What is Avogadros Law

Answer 2

• states that equal volumes of all gases under the same conditions of temperature and pressure contain the same number of molecules

Question 3

Arrhenius theory of acids and bases

Answer 3

• Arrhenius acid is a substance that release H⁺ ions and an Arrhenius base is a substance that releases OH^- ions when dissolved in water

Question 4

Definition of oxidation number

Answer 4

• each atom in a molecule is assigned an oxidation number which is the charge the atom would have if electrons were not shared but were transferred completely

Question 5

What is disproportionation

Answer 5

• is a redox reaction in which the same substance is oxidised and reduced at the same time

Question 6

What is comproportionation

Answer 6

• is a redox reaction in which two reactants, each containing the same element of a different oxidation number, form a product in which the element involved reaches the same oxidation number

Question 7

When balancing redox reactions…

Answer 7

• amount of electrons lost = amount of electrons gained