AOS1 revision

Question 1

graph axis

Answer 1

dependent = y axis, independent = x axis

Question 2

how were you able to order the half equations in a series?

Answer 2

solid metal reacts = stronger reductant, oxidises

by completing a series of reactions the order can be determined

Question 3

benefit of galvanic cells on society

Answer 3

storage of extra energy created by renewable sources for later use = reduces consumption of fossil fuels

applications in transportable devices including medical devices = saves/greatly improves the quality of people’s lives

Question 4

formula to find [OH-]

important

Answer 4

1.00 x 10^-14M^2/[H3O+]M

Question 5

why can the pH measurement be the same if weak acid is used instead of strong acid?

Answer 5

strong acids fully deprotonate, weak acids only partially deprotonate

a more concentrated weak acid can have the same pH as a more dilute strong acid (same [H3O+])

Question 6

writing equations to show amphiprotic species

Answer 6

remember to include water as a reactant

Question 7

why are metals on the left side of the periodic table more easily oxidised and stronger reducing agents?

Answer 7

a stronger reducing agent is more easily oxidised and loses electrons more easily

elements on the left side of the periodic table lose electrons more easily due to lower core charge/first ionisation energy