pOH and interconverting pH, pOH, [H+] and [OH-]

(i) Outline the way in which ammonia behaves as a Lewis base during the formation of the complex ion $\ce{[Ag(NH3)2]+(aq)}$. (ii) Determine the pH at 298 K of an aqueous ammonia solution of concentration 0.180 $\mathrm{mol\,dm^{-3}}$. Use section 1 of the data…

An aqueous solution at 298 K has a pH of 9.20. $K_\mathrm{w} = [\ce{H+}][\ce{OH-}] = 1.00 \times 10^{-14}$ at 298 K What is the hydroxide ion concentration of the solution, in $\mathrm{mol\,dm^{-3}}$? A. $6.31 \times 10^{-10}$ B. $1.58 \times 10^{-9}$ C.…