[填空题]
Water dissociates partiallyz (u.s k* :utzqq,(4i,gryoy a54gxukfgg5 n;2bcr i3and the value of the ionic product constant of water atu4rgnbx; c2g 55f 3gik $25^{\circ}$ 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. $mol\:dm^{-3}$