pH

Question 1

ionisation constant of water (Kw)

Answer 1

represents product of concentrations of hydronium and oh ions in water in a given temp

at 25 degrees its 1.006 x 10^-14

Question 2

what happens to Kw value when temperature is increased

Answer 2

formation of hydrogen and hydroxide ions is favoured so as H+ is higher, pH falls

at low temps, formation of water is favoured, so less H+ so higher ph

Question 3

ionisation of water

Answer 3

endothermic process