CCC化学竞赛真题资料 2020参赛的你能答对多少?

本文将同大家一起练手几道CCC化学竞赛真题（2020），如果你有计划参加明年4月的比赛，可要认真答题啦。

（点击查看2022CCC竞赛时间、含金量、报名方法与考试范围整理）

CCC化学竞赛真题精选（2020）

12)A mixture of ethanol and nitric acid,called nital,is an industrial etchingagent.A student prepared a 20.0 mL solution of nitalusing 0.70 mL of nitricacidof unknown concentrationand 19.3 mL of 98% ethanol. The studentdeterminedby titration that the final concentration of nitric acid in the nitaletching agent was4.0 %by mass.The density of 98% ethanol was0.79 gmL-1and the density of the unknown concentration of aqueous HNO3was1.4 g mL-1.What wastheoriginalconcentrationof HNO3,in w/w, in the0.70 mLreagentthe student used for the nital solution preparation?

A)63%

B)66%

C)70%

D)73%E

E)93%

CCC化学竞赛真题：

13)A student placed 3 identical metal cubes into an oven and heated them to thesame final temperature. The student entirely submerged each of the 3 cubesinseparate beakersasshown in the diagram below. All solutions hadapproximately the same density and all were at room temperature beforeadding the metal cubes. The maximum temperature compared as follows:

Tmaxbeaker B > Tmaxbeaker A > Tmaxbeaker C.

Which of the following is true about the relationship of the specific heatcapacities of solutions A, B and C?

A)cA> cC> cB

B)cC> cB> cA

C)cC> cA> cB

D)cB> cA> cC

E)cB> cC> cA

14)The organic compound belowis a local anesthetic developed over onehundred years ago to treat pain.What is the correct IUPAC name of thecompound?

A)methyl 4-hydroxy-5-aminobenzoate

B)methyl 3-hydroxy-4-aminobenzoate

C)methyl 3-aminophenolate

D)methyl 3-amino-4-hydroxybenzoic acidE)methyl 3-amino-4-hydroxybenzoate

以上CCC化学竞赛真题答案如下：B C E

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整合大量竞赛全真题库

进行模块化学习

看完CCC化学竞赛真题，你还可以读↓

2022国际竞赛时间表:AMC  UKCHO BBO NEC来助力大学申请啦

申请牛津大学本科化学专业很难吗？