论文部分内容阅读
一、学生常忽视的几个问题1.状态问题,如水在标准状况时为液态或固态;SO3在标准状况下为固态,常温常压下为液态。2.特殊物质摩尔质量,如D2O、T2O、18O2等。3.某些物质分子中的原子个数,如O3、Ne、白磷(P4)等。4.用到22.4 L/mol时,必须注意气体是否处于标准状态。二、使用摩尔概念时应注意的几个问题1.物质的量与摩尔:物质的量是基本物理量
First, the students often overlooked a few issues 1. Status issues, such as water in the standard conditions for the liquid or solid state; SO3 in the standard conditions for the solid, normal temperature and pressure for the liquid. 2. Special material molar mass, such as D2O, T2O, 18O2 and so on. 3. Some material molecules in the number of atoms, such as O3, Ne, white phosphorus (P4) and so on. 4. When 22.4 L / mol is used, attention must be paid to whether the gas is in the standard state. Second, the use of the concept of Moore should pay attention to several issues 1. The amount of material and Moore: The amount of material is the basic physical quantity