Chemistry (pH)

Question 1

Why Is Distilled Water Neutral

Answer 1

There is an equal concentration oh H+ and OH- ions

Question 2

Find ionic Product of Water Kw

Answer 2

Mulitply concentration of H+ and OH- ions together

Question 3

Why does temp increase as Kw increases

Answer 3

Temp increase, greater degree of self ionisation of water, more H+ and Oh- ions present
2) Self ionisation of water is endothermic, More H+ and OH- ions

Question 4

pH calculations

Answer 4

pH = -log10(H+)

Question 5

Limitations to pH Scale

Answer 5

1) Does not work with highly concentrated solutions (complete dissascociation may not occur)
2)Limited to aqueous solutions
3) Temperature dependent