Question

Michelle carries out the test on zinc and lead. Justin carries out the test on copper and aluminium. Michelle uses dilute hydrochloric acid and Justin uses very dilute sulfuric acid for his tests. Explain why Michelle and Justin cannot use their observations to decide if copper or aluminium are more or less reactive than zinc and lead.

Answer 1

Answer:

as per Michelle experiment

Zn+2HCL= ZnCl2+H2

Pb+2HCL=PbCl2+H2

metal +acid= salt +hydrogen

as per justin experiment

copper does not react with hydrogen as it is less reactive so

Cu+H2So4= no reaction

but;

Al+H2SO4=Al2(So4)3+H2

so we conclude that

copper is less reactive than aluminium, zinc and lead and

alluminium is more reactive than copper,zinc,lead and

zinc is more reactive than copper and lead but less reactive than aluminium and

lead is more reactive than copper but less reactive than zinc and aluminium

I hope this information is helpful for you