单项选择题
A certain weak acid is 10% dissociated in 1.0mol·L-1 solution.In 0.10mol·L-1 solution,the percentage of dissociation would be()。
A.greater than10 B.10 C.less than10 D.zero
单项选择题 Which one of the following ions would give a basic solution upon addition to water?()
单项选择题 配制pH=9.00的缓冲溶液,最好应选用()
单项选择题 下列各种盐在水溶液中水解不生成沉淀的是()