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(1)进口氯化钾是老红色光滑的颗粒;而外观上不光滑、有棱角的红色碎块为红砖。(2)全溶于水的为进口氯化钾;不溶于水的红碎块为红砖等杂质。(3)进口氯化钾很坚硬,不易破碎;而红砖很脆,轻轻敲打就碎裂。(4)在烧红的木炭上,发生爆裂声的为氯化钾、硫酸钾;发生溶融,无爆裂声的为氯
(1) imported potassium chloride is the old red smooth particles; while the appearance is not smooth, angular red pieces of red brick. (2) fully soluble in water for the import of potassium chloride; insoluble red fragments of red brick and other impurities. (3) imports of potassium chloride is very hard, not easy to break; and red brick is very crisp, lightly beat on the broken. (4) on the burning red charcoal, the occurrence of cracking sound for the potassium chloride, potassium sulfate; melted, no crack sound of chlorine