Respuesta :
Grams are the unit of the mass measurement. When aluminum reacts with sulfuric acid then 287. 39 gms of aluminum sulfate is formed.
What is mass?
The mass of the substance is the product of the molar mass and the moles of the substance.
The balanced chemical reaction is shown as:
2Al + 3 H₂SO₄ → Al2(SO₄)₃ + H₂
Given,
Mass of sulfuric acid = 250 gm
Molar mass of sulfuric acid = 98.079 gm/mol
Molar mass of aluminium sulfate = 342.14 gm/mol
Moles of sulfuric acid:
Moles = mass ÷ molar mass
= 250 ÷ 98.079
= 2.54 moles
From the reaction, it can be said that 3 moles of sulfuric acid give 1 mole of aluminum sulfate. So, 2.54 moles will give, 0.84 moles.
From moles of aluminum sulfate the mass is calculated as:
mass = moles × molar mass
= 0.84 × 342.14
= 287.39 gms
Therefore, 287.39 gm of aluminum sulfate is produced from 250 gm of sulfuric acid.
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