论文部分内容阅读
第一题(12分) 120ｇ含2种化合物(由常见元素组成)的近白色固体溶于过量盐酸,释放出294Ｌ气体(标准状况),气体密度为同温度下空气密度的152倍;剩余的不溶性残渣含氧532%,既不溶于酸又不溶于稀碱溶液。通过计算分别写出2种化学物质的化学式。计算过程: 。化学物质的化学式:
Problem 1 (12 points) 120 g of near-white solid containing 2 compounds (consisting of common elements) is dissolved in excess hydrochloric acid to release 294 L of gas (standard condition). The gas density is 152 times the air density at the same temperature; The insoluble residue contains oxygen at 52% and is neither soluble in acid nor soluble in dilute alkaline solutions. Calculate chemical formulas for the two chemical substances separately. calculation process: . Chemical formula: