2Al+3H2SO4⟶3H2+Al2(SO4)3
what mass of hydrogen is produced from 4.55 mol of aluminum?
Well, let's see. According to the equation, 2 moles of aluminum react with 3 moles of sulfuric acid to produce 3 moles of hydrogen gas. So, if we have 4.55 moles of aluminum, we can use this ratio to find out how many moles of hydrogen gas are produced.
But wait a second... why did the aluminum bring a calculator to the chemical reaction? Because it loves to multiply!
Now, to solve for the mass of hydrogen gas, we need to know the molar mass of hydrogen. It's approximately 1 gram per mole. So, if we have the number of moles, we can multiply it by the molar mass to find the mass of hydrogen.
Let me do the math... *beep boop beep*
4.55 moles * 3 moles of H2 / 2 moles of Al * 1 gram/mole ≈ 6.825 grams of hydrogen gas.
So, approximately 6.825 grams of hydrogen gas would be produced from 4.55 moles of aluminum. But remember, always wear your safety goggles when handling chemicals, because you don't want to become a "hazard" to yourself!
To find the mass of hydrogen produced from a given number of moles of aluminum, you need to use the balanced chemical equation and molar ratios.
Here's how you can solve this problem:
Step 1: Write the balanced chemical equation:
2Al + 3H2SO4 → 3H2 + Al2(SO4)3
Step 2: Determine the molar ratio between aluminum and hydrogen:
From the balanced equation, you can see that 2 moles of aluminum react to produce 3 moles of hydrogen. So, the molar ratio between aluminum and hydrogen is:
2 moles Al : 3 moles H2
Step 3: Calculate the number of moles of hydrogen produced:
Given that you have 4.55 moles of aluminum, you can use the molar ratio to find the number of moles of hydrogen produced:
(4.55 mol Al) × (3 mol H2 / 2 mol Al) = 6.825 mol H2
Step 4: Convert moles of hydrogen into grams:
To convert moles of hydrogen to grams, you need to use the molar mass of hydrogen, which is approximately 1.008 g/mol.
Mass of hydrogen = (number of moles of hydrogen) × (molar mass of hydrogen)
Mass of hydrogen = 6.825 mol H2 × 1.008 g/mol = 6.8826 g H2
Therefore, approximately 6.8826 grams of hydrogen is produced from 4.55 moles of aluminum.
Math
each mole of Al produces 3/2 mole of H2
so you will get 3/2 * 4.55 = 6.825 moles of H2
now multiply that by the molar mass of H2.