酸的通性
1酸使紫色石蕊试液变红,使无色酚酞试液不变色.盐酸使紫色石蕊试液变红,无色酚酞试液不变色硫酸使紫色石蕊试液变红,无色酚酞试液不变色.金属+酸→盐+氢气Zn+2HCl=ZnCl2+H2↑Zn+H2SO4=ZnSO4+H2↑碱性氧化物+酸...