Reactions between aqueous or solid LiOH
it would actually produce a faster reaction to have the $\ce{LiOH}$ in a aqueous solution rather than having it as a solid. all you would do is bubble the $\ce{CO2}$ through the solution and it will go cloudy. you've probably done a similar thing but with $\ce{Ca(OH)2}$ to form calcium carbonate as a test for $\ce{ CO2}$.