CU5 2016 Flashcards
1
Q
Ionic equation sodium and water
A
2Na + 2H2O -> 2Na+ + 2OH- + H2
2
Q
Write two equations to show the amphoteric nature of the oxide of Z
A
Al2O + 6H+ -> 2Al3+ + 3H2O
Al2O3 + 2OH- + 3H2O -> 2[Al(OH)4]-
3
Q
Suggest why the use of a hydrogen-oxygen fuel cell might not be carbon-neutral
A
Combustion to generate hydrogen to release CO2
