[填空题]
Water dissociates partially an3f9f.abtwj a0zom -j6 d the value of the ionic product constant of wat5; er l7lmq,vber at 5;l,7lmv erqb $25^{\circ}$ is $1.00\times10^{-14}$.
1.State an equation for the dissociation of water.
2.Calculate the pH of a $0.0100mol\:dm^{-3}$ of lithium hydroxide at 298K.
3.Explain whether a $0.0100mol\:dm^{-3}$ solution of calcium hydroxide will have a higher or lower pH than a $0.0100mol\:dm^{-3}$ solution of lithium hydroxide at the same temperature. $mol\:dm^{-3}$
