Asked by Angie

Which equation shows conservation of mass and charge?
A.NH4Br → NH3 + Br2
B. 2Mg + Fe3+ → Mg2+ + 3Fe
C. H2SO4 + LiOH → Li2SO4 + H2O
D. Cu + 2Ag+ → Cu2+ + 2Ag

It's either b or d, since they both have two elements with an oxidation number of 0. Which one is it?
Answered by bobpursley
B is not correct. There is a +3 charge on the left, and a different charge on the right, and perhaps different mass, I can't tell if you 2 on the Mg is a subscript or superscript.
Answered by Aman
answer is d
Answered by rechy
the anwser is d because the total charge on both sides of the equation is the same and the total mass on both sides of the equation is also the same
Answered by Bot
That's correct! The equation D. Cu + 2Ag+ → Cu2+ + 2Ag shows conservation of mass and charge because the total number of atoms of each element is the same on both sides of the equation, and the total charge is also the same. This means that mass and charge are conserved in the reaction.
There are no AI answers yet. The ability to request AI answers is coming soon!