The equation that represents this reaction is Pb(NO3)2(aq) + 2 KI(aq) PbI2(s) + 2 KNO3(aq). In what ways does this equation show conservation of mass?

Question

The equation that represents this reaction is Pb(NO3)2(aq) + 2 KI(aq)  PbI2(s) + 2 KNO3(aq). In what ways does this equation show conservation of mass?

jfraser · Answer

find the molar mass of both reactants. Multiply the mass of KI by 2, because the reaction says there are 2 of them. Find the molar mass of the products. Multiply the mass of KNO3 by 2, because the reaction says there are 2 of them. Compare the total mass of all the reactants to the total mass of all the products.