Sweet & Sour Chicken

4 chicken breasts
1 cup sugar
3 Tablespoons cornstarch
1/3 cup vinegar
2-3 Tablespoons ketchup
½ tsp salt
1 can pineapple tidbits & juice, separated
1 Tablespoon soy sauce

Cut uncooked chicken breasts into bite-sized pieces. Place into a 9x13 pan. On the stove, combine sugar and cornstarch in a saucepan. Add vinegar, ketchup, salt, soy sauce, and pineapple juice. Heat sauce until it thickens. Pour over frozen chicken, add pineapple tidbits and bake, covered, at 375 for 50-60 min. Serve over rice.