Defending champion Brazil beat Mexico, 2-0, tonight to reach its third successive final in the Copa America tournament, South America's soccer championship.

First-half goals by striker Amoroso, his fourth of the tournament, and Rivaldo, his third, gave the World Cup runner-up a comfortable victory over an uninspired opponent in their semifinal. Mexico won a dozen corners plus several free kicks in good positions but was unable to threaten Brazil.

Brazil, which will meet Uruguay in Sunday's title game, went ahead in the 25th minute. Uruguay beat Chile, 5-3 on penalty kicks, after the teams finished tied at 1 Tuesday night.

Emerson Ferreira split the Mexican defense and released Ze Roberto on the left. His cross hit a defender and sped into the path of Rivaldo. Rivaldo's header rebounded against the post and Amoroso fired home the rebound.

Rivaldo scored the second with a left-footed shot from outside the penalty area after playing a one-two with Ronaldo three minutes before the break.

Ronaldo, yellow-carded in the quarterfinal win over Argentina, appeared aware that he would miss the final if he picked up another card and was replaced late in the game by Ronaldo Assis.

As in its first-round matches against Brazil and Chile and its quarterfinal against Peru, Mexico improved after halftime but this time never took advantage.

Apart from a couple of long-range shots, defender Rafael Marquez had the best effort, but his close-range header was easily saved by Dida.