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准研究性实验是指在教师指导下的研究性实验。开设准研究性实验有利于培养学生的创新能力。在BaCl2.2 H2O中钡的质量分数wBa的测定(重量法)实验中,就沉淀条件对生成的硫酸钡(BaSO4)的沉淀的状态、wBa以及进一步测定BaSO4的溶度积常数(Ksθp,BaSO4)的影响进行了相关性研究。该实验集化学分析和仪器分析于一体,可作为基础化学(无机及分析化学)实验准研究性实验开设。
The quasi-research experiment refers to the research experiment under the guidance of the teacher. The establishment of quasi-research experiments is conducive to the cultivation of students’ innovative abilities. In BaCl2.2H2O barium mass fraction wBa determination (gravimetric method) experiment, the precipitation conditions on the formation of barium sulfate (BaSO4) precipitation state, wBa and further determination of BaSO4 solubility product constant (Ksθp, BaSO4 ) Of the impact of the correlation study. The experimental set of chemical analysis and instrumental analysis in one, can be used as basic chemistry (inorganic and analytical chemistry) experimental research experiments set up.