Question

Which of the following is an oxidation-reduction reaction?

a. HCl_(aq) + NaOH_(aq) → H₂O_(l) + NaCl_(aq)
b. Cu_(s) + 2AgNO_3(aq) → Cu(NO₃)_2(aq) + 2Ag_(s)
c. AgNO_3(aq) + HCl_(aq) → AgCl_(s) + HNO_3(aq)
d. 2HCl_(aq) + CaCO_3(s) → H₂O_(l) + CaCl_2(aq) + CO_2(g)

Which of the following is an oxidation-reduction reaction?

a. HCl(aq) + NaOH(aq) → H2O (l) + NaCl (aq)
b. Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag (s)
c. AgNO3(aq) + HCl(aq) → AgCl(s) + HNO3(aq)
d. 2 HCl(aq) + CaCO3(s) → H2O (l) + CaCl2 (aq) + CO2(g)