tom_servo_dds

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Jun 20, 2006
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found this one on Topscore that I don't understand the answer to.

Q: What are the products of the balanced equation when iron (III) oxide reacts with magnesium chloride?

A:
A) FeCl3, Mg2O
B) FeCl2, MgO
C) FeCl3, MgO
D) Fe2Cl3, MgO
E) Fe3Cl2, Mg2O

Answer key says that it's C because "Fe2O3 + MgCl2 ==> FeCl3 MgO"

However, this isn't a balanced equation as the problem asks for. Anyone have any thoughts? I've been studying for about 14 hours today so maybe I'm just going cross-eyed again. Thanks in advance!
 

dat_student

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tom_servo_dds said:
found this one on Topscore that I don't understand the answer to.

Q: What are the products of the balanced equation when iron (III) oxide reacts with magnesium chloride?

A:
A) FeCl3, Mg2O
B) FeCl2, MgO
C) FeCl3, MgO
D) Fe2Cl3, MgO
E) Fe3Cl2, Mg2O

Answer key says that it's C because "Fe2O3 + MgCl2 ==> FeCl3 MgO"

However, this isn't a balanced equation as the problem asks for. Anyone have any thoughts? I've been studying for about 14 hours today so maybe I'm just going cross-eyed again. Thanks in advance!
The problem says "Iron (iii)" so the right answer is either A or C

A) FeCl3, Mg2O
C) FeCl3, MgO

MgCl2 tells me the valence of Mg = 2 & we know the valence of O = 2
so MgO is the right answer. [Mg2O means Oxygen has a valence of 4 << WRONG]

Thus, C is the only right answer. :)
 

slayerdeus

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Jul 19, 2006
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tom_servo_dds said:
found this one on Topscore that I don't understand the answer to.

Q: What are the products of the balanced equation when iron (III) oxide reacts with magnesium chloride?

A:
A) FeCl3, Mg2O
B) FeCl2, MgO
C) FeCl3, MgO
D) Fe2Cl3, MgO
E) Fe3Cl2, Mg2O

Answer key says that it's C because "Fe2O3 + MgCl2 ==> FeCl3 MgO"

However, this isn't a balanced equation as the problem asks for. Anyone have any thoughts? I've been studying for about 14 hours today so maybe I'm just going cross-eyed again. Thanks in advance!
Don't confuse yourself man, stay focused. The question is not asking for the balanced equation, only which products are formed. Goodluck.
 
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tom_servo_dds

tom_servo_dds

Senior Member
10+ Year Member
Jun 20, 2006
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slayerdeus said:
Don't confuse yourself man, stay focused. The question is not asking for the balanced equation, only which products are formed. Goodluck.
Great, thanks for the answer you two - that makes sense now. Best of luck to both of you too! :)
 
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