Required practical 7b - Initial rate method Flashcards
1
Q
Calculation of gradient of line of best fit
A
tangents to a curve
2
Q
Reaction used in clock reactions
A
hydrogen peroxide with iodide ions in acidic solution
3
Q
Hydrogen peroxide with iodide ions in acidic solution symbol equation
A
H2O2 + 2H+ + 2I- > I2 + 2H2O
4
Q
When to measure the time in clock reactions
A
from start of reaction until a visual change occurs
5
Q
Examples of visual changes in clock reactions
3
A
- appearance of a precipitate
- disappearance of a solid
- change in colour
