Arsenal are still five points behind league leaders Liverpool, and have played two more games.
Declan Rice scored his first goal for Arsenal and Gabriel Jesus added the icing on the cake as Arsenal roared back from a goal down to beat Manchester United 3-1 at the Emirates on Sunday
Gabriel Jesus will miss the start of the new season, including Sunday's Community Shield clash with English champions Manchester City.
Brazilian striker Gabriel Jesus will miss the start of the new Premier League season after undergoing a minor operation
Bukayo Saka, Gabriel Jesus and Jakub Kiwior were also on target to ensure Mikel Arteta's men went into the off-season on an uplifting note after the agony of their failed title bid.
Martin Odegaard fired Arsenal back to the top of the Premier League as the Norway midfielder's double inspired a 3-1 win against woeful Chelsea on Tuesday
Arsenal defeated Leeds to continue their winning run in Premier League.
Arsenal are once again at the top of the Premier League table - five points ahead of Manchester City.
Arsenal boss Mikel Arteta has said the "significant injury" suffered by Gabriel Jesus will bolster the Gunners' efforts in the January transfer window
Arsenal forward Jesus featured in all three of Brazil's Group G games but the five-time world champions have a wealth of attacking talent.