1 Hour 45 Minutes layover at PEK

I am flying from San Francisco International(SFO) to Phuket International(HKT) with a 1 hour and 45 minute layover in Beijing International(PEK). My wife and I are inexperienced travelers who only speak english. Will 1 hour and 45 minutes be enough time for us to make our flight? All flights are with Air China. Thanks for your consideration.