Calculate the amount of hydrogen gas and zinc sulphate produced when 40gram of zinc reacts with sulphuric acid
Zn+H2SO4>>>H2 + ZnSO4
40 gram zinc= 40/atomicZ=40/65.4
the mole ratio of H2 and Zn is 1:1, so
gramsH2=40/65.4 * 2 = 80/65.4 grams
y2-y1
x2-x1
40×40-40=40
To calculate the amount of hydrogen gas and zinc sulfate produced when 40 grams of zinc reacts with sulfuric acid, you need to first determine the balanced chemical equation for the reaction.
The balanced chemical equation for the reaction between zinc and sulfuric acid is:
Zn + H2SO4 -> ZnSO4 + H2
From this equation, you can see that 1 mole of zinc (Zn) reacts with 1 mole of sulfuric acid (H2SO4) to produce 1 mole of zinc sulfate (ZnSO4) and 1 mole of hydrogen gas (H2).
Now, we need to calculate the number of moles of zinc present in 40 grams of zinc. To do this, you need to divide the given mass by the molar mass of zinc. The molar mass of zinc is approximately 65.38 g/mol.
Number of moles of zinc = 40 g / 65.38 g/mol ≈ 0.612 mol
Since the balanced chemical equation shows that 1 mole of zinc reacts with 1 mole of sulfuric acid, we can say that the number of moles of sulfuric acid consumed will also be 0.612 mol.
However, in this case, the reaction is not balanced in terms of moles of sulfuric acid. We need 1 mole of sulfuric acid to react with 1 mole of zinc. So, in order to balance the equation, we multiply the number of moles of sulfuric acid by 2.
Number of moles of sulfuric acid = 0.612 mol x 2 ≈ 1.224 mol
Now that we know the number of moles of zinc and sulfuric acid involved in the reaction, we can determine the number of moles of hydrogen gas and zinc sulfate produced.
Since the reaction is balanced, we can say that 1 mole of zinc will produce 1 mole of hydrogen gas and 1 mole of zinc sulfate.
Therefore, the amount of hydrogen gas and zinc sulfate produced will be approximately 0.612 moles for each.
Finally, if you want to calculate the mass of the products, you can multiply the number of moles by their respective molar masses.
Mass of hydrogen gas = 0.612 mol x (2 g/mol) ≈ 1.224 g
Mass of zinc sulfate = 0.612 mol x (161.47 g/mol) ≈ 98.905 g
So, when 40 grams of zinc reacts with sulfuric acid, approximately 1.224 grams of hydrogen gas and 98.905 grams of zinc sulfate are produced.