Question

al-al2s3-al(oh)3-al2(so4)3-AL(OH)3-AL2O3

Answer 1

Al+h2s⇒Al2s3+ H2
Al2s3+koh⇒al(oh)3+ks3
al(oh)3+h2so4⇒al2(so4)3+h2o
al2(so4)3⇒al(oh)3 +h2so4
al(oh)3⇒al2o3+h2 
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