how many grams of hydrogen chloride is needed to produce 200 grams of hydrogen
To calculate the number of grams of hydrogen chloride needed to produce 200 grams of hydrogen, we need to consider the balanced chemical equation for the reaction.
The balanced chemical equation for the reaction between hydrogen chloride (HCl) and hydrogen (H₂) is:
2 HCl + Zn ⟶ H₂ + ZnCl₂
From this equation, we can see that 2 moles of hydrogen chloride are required to produce 1 mole of hydrogen.
To determine the number of moles of hydrogen chloride needed, we need to convert the mass of hydrogen to moles.
Step 1: Convert the mass of hydrogen (H₂) to moles.
Using the molar mass of hydrogen (H₂) which is approximately 2 grams/mol:
200 grams of hydrogen / 2 grams/mol = 100 moles of hydrogen
Step 2: Determine the moles of hydrogen chloride (HCl) needed.
From the balanced chemical equation, we know that 1 mole of hydrogen requires 2 moles of hydrogen chloride.
Therefore, the number of moles of hydrogen chloride needed is:
100 moles of hydrogen × (2 moles of HCl / 1 mole of H₂) = 200 moles of HCl
Step 3: Convert moles of hydrogen chloride to grams.
To convert moles to grams, we need to multiply the number of moles of hydrogen chloride by its molar mass, which is approximately 36.5 grams/mol:
200 moles of HCl × 36.5 grams/mol = 7300 grams of HCl
Therefore, approximately 7300 grams of hydrogen chloride are needed to produce 200 grams of hydrogen.
To determine the number of grams of hydrogen chloride needed to produce 200 grams of hydrogen, we need to know the balanced chemical equation for the reaction between hydrogen chloride (HCl) and hydrogen (H2).
The balanced equation for this reaction is:
2 HCl + Zn -> ZnCl2 + H2
From this equation, we can see that 2 moles of hydrochloric acid (HCl) react to produce 1 mole of hydrogen (H2).
To calculate the number of moles of hydrogen produced, we need to know the molar mass of hydrogen. The molar mass of hydrogen is 2 grams/mol.
Using the molar mass of hydrogen, we can calculate the number of moles of hydrogen produced:
Number of moles of hydrogen = (mass of hydrogen) / (molar mass of hydrogen)
Number of moles of hydrogen = 200 grams / 2 grams/mol
Number of moles of hydrogen = 100 mol
Since the reaction is 2 moles of HCl to 1 mole of H2, we need half the number of moles of HCl compared to H2.
Number of moles of HCl = (Number of moles of hydrogen) / 2
Number of moles of HCl = 100 mol / 2
Number of moles of HCl = 50 mol
Finally, to calculate the grams of HCl required, we multiply the number of moles of HCl by its molar mass (36.5 grams/mol) to get:
Mass of HCl = (Number of moles of HCl) * (molar mass of HCl)
Mass of HCl = 50 mol * 36.5 grams/mol
Mass of HCl = 1825 grams
Therefore, you would need approximately 1825 grams of hydrogen chloride to produce 200 grams of hydrogen.
This is a stoichiometry problem. Here is a solved example of a stoichiometry problem. Just follow the steps.
http://www.jiskha.com/science/chemistry/stoichiometry.html