✔ 最佳答案
metal + very dilute nitric acid → metal nitrate + hydrogen
metal + dilute nitric acid → metal nitrate + nitrogen monoxide + water
metal + concentrated nitric acid → metal nitrate + nitrogen dioxide + water
metal + dilute hydrochloric acid → metal chloride + hydrogen
metal + concentrated hydrochloric acid → metal chloride + hydrogen
metal + dilute sulphuric acid → metal sulphate + hydrogen
metal + concentrated sulphuric acid → metal sulphate + sulphur dioxide + water