MARCOS Alonso scored the opening goal after 13 minutes before Eden Hazard doubled the lead with a sensational solo effort and Cesc Fabregas added a third late on.
Eden Hazard scored an incredible solo goal to put Chelsea 12 points clear and on the march to the title.
Hazard’s wonder strike after 53 minutes saw him run from the half way line, beat Francis Coquelin, Laurent Koscielny and Shkodran Mustafi before firing past Petr Cech.
That came on top of Marcos Alonso’s controversial first half opener when TV replays suggested it could have been disallowed as the Chelsea wing back caught Arsenal’s Hector Bellerin with an elbow.
Gunners keeper Petr Cech completed Arsenal’s misery with an awful back pass straight to Cesc Fabregas who fired in an 86th minute chip. Fabregas did not celebrate his goal against his old club.
Olivier Giroud grabbed an injury time consolation with a header from Nacho Monreal’s cross.
But this leaves Chelsea miles ahead at the top, even though Tottenham, Liverpool and Manchester City can narrow the gap slightly this weekend.