Question

Question 1 (20 points)
Which of the following metals can react with Fe2(SO4)3 Iron (III) Sulfate?



a
Ni
b
Al
c
Cu
d
Ag
Question 2 (40 points)
Use the criss cross metod to determine molecular formulas

Ex: Copper (i) Sulfate: Cu ion has a + 1 charge and SO4 ion has a - 2 charge



Question: Predict the molecular formula of Iron (III) carbonate:


1. Charge of Iron is (plus or minus sign followed by the Charge numerical value. Do not leave any spaces between)

2. Charge of Carbonate is (plus or minus sign followed by the Charge numerical value. Do not leave any spaces between)

3. Molecular formula of compound: Fe (SO4)

Blank 1:
Blank 2:
Blank 3:
Blank 4:
Question 3 (5 points)
answer the questions based on the Lab you completed:

1. Station 1:

Which of the following produced a blue solid that was observed?

a
Cobalt (II) hydroxide
b
Cobalt chloride
c
NaOH
d
Sodium chloride
Question 4 (5 points)
Why did you observe HCl and Zn reaction in station-2 produce bubbles? Select BEST response.

a
Because Zn displaced H in a single displacement reaction and Hydrogen was released as H2 gas
b
Because Zn that's higher up in the metal reactivity series displaced H
c
Because H that's higher up in the metal reactivity series displaced Zn
d
Because Zn displaced H in a double displacement reaction and Hydrogen was released as H2 gas
Question 5 (5 points)
what was the name of the green substance observed in Station 5?

a
copper(2) chloride
b
Copper sulfate
c
Copper (II) chloride
d
copper 2 chloride
Question 6 (15 points)
What is the balanced equation mole ration of the Station 3 chemical reaction as written below?

CuSO4 + Fe ----> Fe2(SO4)3 + Cu

a
3:2:1:3
b
3:1:2:1
c
1:3:2:3
d
1:2:1:3

Answer 1

Question 1 (20 pts)
Answer: b (Al)

Question 2 (40 pts) — Iron (III) carbonate
1. Charge of Iron is: +3
2. Charge of Carbonate is: -2
3. Molecular formula of compound: Fe2(CO3)3

(If filling separate blanks for subscripts:)
Blank1: +3
Blank2: -2
Blank3: 2
Blank4: 3

Question 3 (5 pts)
Answer: a (Cobalt (II) hydroxide)

Question 4 (5 pts)
Answer: a (Because Zn displaced H in a single displacement reaction and Hydrogen was released as H2 gas)

Question 5 (5 pts)
Answer: c (Copper (II) chloride)

Question 6 (15 pts)
Balanced mole ratio for CuSO4 + Fe → Fe2(SO4)3 + Cu is 3:2:1:3
Answer: a (3:2:1:3)