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化学科高考复习策略之一就是在高考中尽量少失分,而少失分就是少错。考前集中精力解决高考中的易错点是保证高考成功的重要方法。定量关系主次不分、大小不清例1向50mL18mol·L-1的硫酸中加入足量的铜片并加热,被还原的硫酸的物质的量为A.等于0.9mol B.大于0.45mol,小于0.9molC
One of the strategies of the college entrance examination review is to score as few points as possible in the college entrance examination, and less points are less mistakes. Concentrating on solving the error-prone points in the college entrance examination before the exam is an important method to ensure the success of the college entrance examination. Quantitative relationship between the primary and secondary, regardless of the size of the case is not clear 1 to 50mL18mol · L-1 sulfuric acid by adding a sufficient amount of copper and heating, the amount of sulfuric acid reduction is A. equal to 0.9mol B. greater than 0.45mol, Less than 0.9molC