利用标准加入法测定试样中铜的浓度时,在原子吸收分光光度计中得到以下数据,请计算试样中铜的含量。
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死时间是指______的时间。校正保留时间是指______的时间。
配位滴定中,酸效应系数越小,生成的配合物稳定性越高。( )
EDTA滴定金属离子反应中,因酸效应的作用,使KΘ'(MY)总是大于KΘ(MY)。( )
A solution containing 1.00mg iron (as the thiocyanate complex) in 100mL was observed to transmit 70.0% of the incident light compared to an appropriate bland. (a) What is the absorbance of the solution at this wave length? (b) What fraction of light would be transmitted by a solution of iron four times as concentrated?