Chelsea registered just four shots on target in their penultimate game of the season but a point guaranteed the club at least a third-placed finish in the Premier League.
|250/1||Chelsea are 250/1 with William Hill to win the title this season|
"First half, we were very slow. Like the weather, players were playing slow. No intensity," Mourinho told Sky Sports.
"We tried everything but at the end of the day we know that we have no chances to be champions. We know that we needed one point to finish in the group stages of the Champions League.
"We had one team that needed three points to have a chance to survive. They didn't play to win.
"And you had a team that needed one point to finish third and that team played like they needed three points. It was a bit of a contradiction on that."
Eden Hazard begun the match on the bench after being criticised by Mourinho for his defensive contribution during Chelsea’s Champions League defeat to Atletico Madrid in the Champions League.
The Belgium international, along with David Luiz, were introduced at the break against Norwich, and Mourinho feels the changes boosted Chelsea’s urgency.
"I think the team in the second half was much, much better," the 51-year-old said. "Much more intense. In the first half only Willian was looking for the ball and trying to change the pace of the game.
"In the second half Hazard was the second one to do that. David Luiz also gave us more intensity. We should win with what we did in the second half but football is about goals and we didn't score."
When asked if the title race was over for Chelsea after the stalemate, Mourinho replied: "Yeah. I've been saying that for a few weeks.
It's quite strange that in the most important league in the world there is still two matches in hand to play in the last week. We knew especially after the Sunderland fixture that it was impossible to do it."