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物质的量浓度是表示溶液浓度的一种物理量,也是历年高考命题的重要考点,为了更好的学习这一部分内容,下面将其常见考点总结如下。考点一:物质的量浓度的基本概念1.物质的量浓度——表示单位体积溶液里所含溶质B的物质的量的物理量。2.符号为cB。3.单位:mol/L。4.表达式:cB=nB V。例1对1mol·L-1的BaCl2溶液的有关叙述中,正确的是()。A.该溶液中Cl-浓度为2mol·L-1B.该溶液中Ba2+的物质的量是1mol C.可使用250mL容量瓶分两次完成490mL该浓度的BaCl2溶液的配制将固体溶解在水中,形成
The amount of substance concentration is a physical quantity that represents the concentration of the solution and is also an important test point for the college entrance examination proposition over the years. To better understand this part, the following is a summary of common test points. Test point one: the basic concepts of the amount of substance concentration 1. The amount of substance concentration - that is, the unit volume of solute B contained in the amount of physical substance. The symbol is cB. 3. Unit: mol / L. 4. Expression: cB = nB V. Example 1 1mol·L-1 BaCl2 solution in the description, the correct (). A. The concentration of Cl- in the solution is 2 mol·L-1 B. The amount of Ba2 + in the solution is 1 mol C. The preparation of 490 mL of BaCl2 solution can be completed in two steps using a 250 mL volumetric flask. The solid is dissolved in water, form