CTRL+F5 in Google Chrome in XFCE
Generally in XFCE keyboard shortcuts the shortcut key Ctrl+F5 is configured to switch to workspace 5, if you do not have any workspace 5, then hitting ctrl+f5 wont do anything.
To resolve it goto,
Applications Menu > Settings > Settings Manager > Window Manager
check the Keyboard tab, and find the option which has Ctrl+F5 configured as short-cut key,
clear that short-cut key.
you should be able to use Ctrl+F5 key now for chrome.