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应用一:根据金属活动性顺序判断某些置换反应能否发生1.判断金属与酸能否反应在金属活动性顺序里,位于氢前面的金属能置换出盐酸、稀硫酸中的氢。应注意:金属必须排在氢前面;酸一般指盐酸或稀硫酸。2.判断金属与盐溶液能否反应在金属活动性顺序里,位于前面的金属能把位于后面的金属从它们化合物的溶液里置换出来。应注意:金属不包括K、Ca、Na;盐必须可溶于水。
Application One: According to the order of metal activity to determine whether some replacement reaction can occur 1. To determine whether the reaction of metals and metals In the metal activity order, in front of the hydrogen metal can replace the hydrochloric acid, hydrogen in dilute sulfuric acid. It should be noted: metal must be ranked in front of hydrogen; acid generally refers to hydrochloric acid or sulfuric acid. 2. Determine the metal and salt solution can react In the metal activity sequence, the front of the metal can be behind the metal from the solution of their compounds out of replacement. It should be noted: metals do not include K, Ca, Na; salts must be soluble in water.