WAEC - Chemistry (1990 - No. 2)
Which of the following reaction will not take place under normal conditions?
Zn(s) + 2HCl → ZnCI2(aq) + H 2(g)
Fe (s) + H 2SO4(aq) → FeSO4(aq) + H2(g)
Cu (s) + 2HCI (aq) → CuCI 2(aq) + H2(g)
Ca(s) + 2H 2O (1) → Ca(OH)2(g) + H2(g)
2Na(s) + 2H 2O (1) → 2NaOH(aq) + H2(g)
설명
When copper (Cu) is added to hydrochloric acid (HCl), no reaction occurs because copper is less reactive than hydrogen and cannot displace it from the acid; essentially, the copper will not react with the HCl.