Answer to Question #91497 in General Chemistry for Andi Flick

Question #91497
Which reaction will form products that are more stable than the reactants?

A- 2AlBr3+3Zn= 3ZnBr2+2Al
B- CaBr2+2Na=2NaBr+Ca
C- MgBr2+H2= 2HBr+ Mg
D- BaBr2+Ca= CaBr2+Ba
E- 2LiBr+Ba= BaBr2+ 2Li
1
Expert's answer
2019-07-09T04:07:19-0400

None of them. According to the activity metal series, only an ion which is higher up in the chart can displace another ion in the salt. Here are all the examples where reactants are more stable than products.

However, there is a little concern about Na and Ca. There are different positions of these metals in different charts if you google it. But according to calculation of electromotive forces, Ca has lower value, so it would displace Na in reaction B (in the given example).

Reference: World Journal of Chemical Education2014, 2(2), 21-25 doi:10.12691/wjce-2-2-1.

See also a pic attached.


Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment

LATEST TUTORIALS
New on Blog
APPROVED BY CLIENTS