City players were left celebrating the victory across the continent as they had travelled overseas after defeating Spurs on Saturday.
But Pep Guardiola's side made a mockery of such talk to outclass a Spurs side unbeaten in the league since December.
But Guardiola said instead of watching the match he will be playing golf.
"What's happened in the last week is so unfair. When one group in December hears each day that 'we're already champions" it's so hard to give attention to what it's important to do and so they have completed.
After Sterling missed another fine chance, the England attacker finally got on the scoresheet in the 72nd minute when he rammed home from close range after Jesus' shot was parried to put the champagne firmly on ice. "I am excited to be champions with our fans".
"After what happened this week, to come here and play against Tottenham - one of the best teams with one of the best managers by far - and to play how we did in the first half [was impressive]", Guardiola began.
All of Liverpool's prolific front 3 were on target as Sadio Mane and Roberto Firmino struck either side of Salah's deft header to take their combined tally for the season to 82.
"We are able to win two games".
City are on a run of three straight defeats and must bounce back at Wembley on Saturday
Gundogan netted three minutes later from the penalty spot after goalkeeper Hugo Lloris rashly tackled Sterling on the edge of the area.
But it quickly became clear that run of three successive defeats wasn't weighing on City.
"The Champions League is seven knockout games".
Liverpool saw off City in the CL quarters.
After the game, Kompany spoke to Sky Sports about winning the title and was expectantly delighted with the news.
Now the title is in the bag, the club's next challenge will be to claim the record for most points in a single season.
When it comes to discussing City's most important player this year, Sane probably enters the conversation somewhere below Kevin De Bruyne, David Silva, Raheem Sterling, Aguero, Fernandinho, Nicolas Otamendi and Ederson.
Television cameras captured the moment the Belgian discovered he was a three-time champion but, after an initial burst of excitement, he was focusing on the potential for even more success.More news: Commonwealth Games: Nigeria's Suwaibidu Galadima clinches Gold in Men's T47 100m