Joomla Free extensions

hi,
on the website I use k2
in the titles of some items is the apostrophe and sometimes there are words with accents.
when I want to share on facebook text formatting looks like in the picture I am attaching


www.winedemocracy.com/component/k2/item/...dolcetto-d-alba-2014

if I insert the link directly to facebook this problem does not happen
Can you help me to solve?
tks
daniela