blended - redox

Question 1

what is an oxidising agent

Answer 1

species which oxidises another species by removing electrons from it = reduces itself

Question 2

what is a reducing agent

Answer 2

species which reduces another species by donating electrons to it = oxidises itself

Question 3

what is the oxidation state of molecules

Answer 3

0

Question 4

what must oxidation states of all atoms in a neutral molecule add up to

Answer 4

0

Question 5

what must the oxidation states of all atoms in an ion add up to

Answer 5

the overall charge of the ion

Question 6

the more electronegative atoms have…….

Answer 6

negative oxidation states

Question 7

what is the oxidation state of group 1 metals

Answer 7

+1

Question 8

what is the oxidation state of group 2 metals

Answer 8

+2

Question 9

what is the oxidation state of aluminium

Answer 9

3+

Question 10

what is the oxidation state of hydrogen

Answer 10

+1

Question 11

when is the oxidation state of hydrogen -1

Answer 11

when part of a metal hydride

Question 12

what is the oxidation state of fluorine

Answer 12

-1

Question 13

what is the oxidation state of oxygen

Answer 13

-2

Question 14

when is the oxidation state of oxygen -1

Answer 14

in a peroxide

Question 15

what is the oxidation state of chlorine

Answer 15

-1

Question 16

If the oxidation state of an element in a given species becomes more positive, that species has been ……….. during the reaction.

Answer 16

oxidised

Question 17

If the oxidation state of an element in a given species becomes less positive, that species has been ………… during the reaction.

Answer 17

reduced

Question 18

MnO₄²⁻

Answer 18

+6