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n Al=gr/ar
= 5.4/27
=0.2
Al+H₂SO₄-->Al₂(SO₄)₃+H₂ disetarakan
₂Al+₃H₂SO₄-->Al₂(SO₄)₃+₃H₂
n dit=koef dit/koef dik×n dik
n H₂SO₄=koef H₂SO₄/koef Al×n Al
=3/2×0.2
n H₂So₄=0.3
n H₂=koef H₂/koef H₂So₄×n H₂So₄
=3/3×0.3
n H₂=0.3