Which of the following equations violates the law of conservation of mass?

FeCl3 + 3NaOH yields Fe(OH)3 + 3NaCl

CS2 + 3O2 yields CO2 + 2SO2

Mg(ClO3)2 yields MgCl2 + 2O2

Zn + H2SO4 yields H2 + ZnSO4

Question

Which of the following equations violates the law of conservation of mass?

 FeCl3 + 3NaOH yields Fe(OH)3 + 3NaCl

 CS2 + 3O2 yields CO2 + 2SO2

 Mg(ClO3)2  yields MgCl2 + 2O2

 Zn + H2SO4 yields H2 + ZnSO4

joannablackwelder · Answer

I think what you are looking for here is, which reaction is not balanced?

lovelyharmonics · Answer

a and d are defiantly balanced but im not sure about b and c

joannablackwelder · Answer

I agree that a and d are balanced.

lovelyharmonics · Answer

the only part that was tripping me up was the 02 for both b and c, but i see now that both sides =6 on choice b so it would have to be c right?

joannablackwelder · Answer

Yup. :)

lovelyharmonics · Answer

i have 2 other questions is it okay if i tag you in them?

joannablackwelder · Answer

Sure.

joannablackwelder · Answer

Thanks for asking. :)