Lemonade Chicken

4 to 6 pieces chicken
1 6 ounce can frozen lemonade, thawed
2 tablespoons brown sugar
3 tablespoons ketchup
1 tablespoon vinegar
2 tablespoons cornstarch
2 tablespoons cold water

Arrange chicken pieces in crockpot. Combine lemonade, brown sugar and ketchup and mix well. Pour over chicken. Cover. Cook on high 3 to 4 hours or low 6 to 8 hours. Remove chicken from pot, cover to keep hot. Transfer liquid to saucepan. Skim fat; combine cornstarch and cold water and add slowly to liquid, while stirring over low heat. When thickened, serve with chicken over hot rice