1) What is the objective of this experiment? ( name of the experiment cooper cyc
ID: 1004280 • Letter: 1
Question
1) What is the objective of this experiment? ( name of the experiment cooper cycle)
A) Procedure a series of copper compounds beginning and ending with copper metal.
B) Perform and record observations for three types of reactions involved in the copper cycle: Dehydration, double displacement (metathesis), and redox reactions.
C) Determine the amount of copper recovered from the cycle.
D) All are correct.
2) Which of the following reaction types is reaction 1?
A) double replacement.
B) single replacement.
C) combination.
D) decomposition.
3) Which of the following reaction types is reaction 2?
A) double replacement.
B) single replacement.
C) combination.
D) decomposition.
4) Which of the following reaction types is reaction 5?
A) double replacement.
B) single replacement.
C) combination.
D) decomposition.
5) At the end of reaction 3 and beginning of reaction 4, why does one heat the reaction mixture?
A) To force the reaction of CuO to CuSO4
B) To form larger CuO particles that will clogg the filter paper.
C) To reverse the reaction of Cu(OH)2
D) To form smaller particles of CuO.
A) To force the reaction of CuO to CuSO4
B) To form larger CuO particles that will clogg the filter paper.
C) To reverse the reaction of Cu(OH)2
D) To form smaller particles of CuO.
Explanation / Answer
1. All of the statement are correct. The objectives of the copper cylce is to observe different reactions undergone by copper which can be observed by change in colour of the compounds, The reaction starts with Cu and ends with Cu. And at the end of the cycle, the amount of Cu recovered is weighed.
So, answer is D.
2. In reaction 1, the Cu element reacts with HNO3 to give Cu(NO3)2, which means that it is a single displacement reaction. Cu replaces H in HNO3 to form the compound. Answer is B.
3. Reaction 2 is combination of Cu(NO3)2 with NaOH to form Cu(OH)2. This is double displacement reaction. Cu is displaced by Na and NO3- is displaced by OH. So, answer is A.
4. Reaction 5 is reaction of CuSO4 with Zn to form Cu and ZnSO4. So, this is single displacement reaction. Answer is B.
5. In reaction 3, Cu(OH)2 is heated to form CuO. In reaction 4, CuO reacts to give CuSO4. Cu(OH)2 is heated to remove water from the molecule and form CuO. If it is not heated then it will go back to Cu(OH)2. So, the correct option is A.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.