B Decays Involving $\eta$ and ${\eta }^{\mathrm{\prime }}$ in the Light of the $B\to K{\eta }^{\mathrm{\prime }}$ Process

The observation by the CLEO Collaboration of the decays $B^{(+,0)} \to K^{(+,0)} \eta’$ is shown to imply a significant but still uncertain contribution from the flavor-SU(3)-singlet component of the ${\eta }^{\mathrm{\prime }}$. By comparing the rate for these decays with others for decays of B mesons to two pseudoscalar mesons, it is shown that the prospects for observing CP-violating asymmetries in certain modes such as $B^{+}\to {\pi }^{+}\eta$ and $B^+ \to \pi^+ \eta’$ are quite bright.