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?
4 answers
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.
answer is d
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
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.
3 answers