Chemistry with Dev A.
60 min · recorded with consent · drafted in about a minute · reviewed and edited by the tutor · session 4 of 10
- Balancing redox half equations in acidic solution, six worked examples.
- Why the electrons have to cancel before the two halves are added, worked on paper rather than stated.
- Two questions from the mock paper where the method was right and the state symbols were missing.
- Balanced four of the last five without help, including the one he gave up on last week.
- Now checks the charge on both sides before he writes the answer down. He did that unprompted twice.
- Mock paper section B, questions one to eight. Half equations only, skip the rest.
- Write out the six steps from memory once, with the sheet face down.
Open with the six steps from memory. If they hold, start electrode potentials. If they do not, spend the first fifteen minutes there and leave electrode potentials for the week after.