Elizabeth Addo delivered a free-kick from the edge of the box and it flew over the goalkeeper into the top corner for the opener after nine minutes.
This was after striker Princella Adubea had been brought down after beating his marker with her lovely footworks.
In the 23rd minute, Kenya nearly snatched the equalizer, but a free-kick taken from the left flank came off the crossbar the Queens defended it out.
Captain Addo made it two-zero after 55 minutes when she converted a spot kick.
Six minutes from time, Grace Asantewaa’s long range strike landed inside the net for the third goal and to become the tournament’s joint top scorer with three goals alongside Chile’s Karen Araya.
Just before the final whistle, poor defending denied Ghana a clean sheet as Kenya scored from close range to get a consolation.
Ghana will face Romania who finished second in Group A in third-place playoff match.