Which of these equations does not represent an oxidation-reduction reaction?

a. 3Al + 6HCl → 3H2 + AlCl3

b. 2H2O → 2H2 + O2

c. 2NaCl + Pb(NO3)2 → PbCl2 + 3NaNO3

d. 2NaI + Br2 → 2NaBr + I2

c. 2NaCl + Pb(NO3)2 → PbCl2 + 3NaNO3

Explanation:

In the others the elements change their oxidation number when they convert in products. In this reaction no.

Reagents

NaCl= Na (+1),Cl(-1)

PB(NO3)2= Pb(+2), N(+5), O(-2)

Products

PbCl2= Pb(+2), Cl(-1)

NaNO3= Na(+1), N(+5), O(-2)

the law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products

answer; natural resources;