a chamber contains 5.5 grams of hydrogen gas another chamber contains chlorine when the valve is opened the react to form hydrogen chloride with a mass 1995.5 grams. What is the mass of chlorine?
moles HCl = 1995.5/molar mass HCl = ?
? moles HCl x molar mass HCl = grams HCl.
g HCl x (molar mass Cl2/2*molar mass HCl)= grams Cl2.
i don't really understand could you do it again pls and thanks. it was 199.5 my bad
for total mass
H2 + Cl2 ==> 2HCl
5.5..........199.5g
The first post was the short way; however, I put an extra step that is not needed (but it didn't change the answer) and that may be what confused you. Here is a better way.
moles HCl produced = grams/molar mass = 199.5/36.5 = about 5.5 (but you do it more accurately).
Now use the coefficients in the balanced equation to convert moles HCl to moles Cl2.
5.5 moles HCl x (1 mol Cl2/2moles HCl) = 5.5 x (1/2) = 2.75 moles Cl2.
grams Cl2 = moles Cl2 x molar mass Cl2 = about 195 grams. Interesting.
To find the mass of chlorine gas, we can start by determining the mass of hydrogen chloride (HCl) formed during the reaction.
Given:
Mass of hydrogen gas (H₂) = 5.5 grams
Mass of hydrogen chloride (HCl) formed = 1995.5 grams
Since hydrogen chloride (HCl) is formed by the combination of hydrogen gas (H₂) and chlorine gas (Cl₂), we can set up a balanced chemical equation for the reaction as follows:
H₂ + Cl₂ → 2HCl
From the equation, we can observe that 1 mole of hydrogen gas (H₂) reacts with 1 mole of chlorine gas (Cl₂) to produce 2 moles of hydrogen chloride (HCl).
To calculate the moles of hydrogen gas (H₂) present, we need to use the molar mass of hydrogen (H). Hydrogen has an atomic mass of approximately 1 gram/mole. Therefore, the moles of H₂ can be calculated as:
Moles of H₂ = mass of H₂ / molar mass of H
Moles of H₂ = 5.5 grams / 2 grams/mole (since H₂ has 2 hydrogen atoms)
Moles of H₂ = 2.75 moles
Since the stoichiometry of the reaction tells us that the moles of hydrogen chloride (HCl) formed are double the moles of hydrogen gas (H₂), we can determine the moles of HCl as:
Moles of HCl = 2 * Moles of H₂
Moles of HCl = 2 * 2.75 moles
Moles of HCl = 5.5 moles
Now, to find the molar mass of chlorine (Cl), we can use the equation:
Molar mass of HCl = mass of HCl / moles of HCl
Rearranging the equation, we get:
Mass of HCl = molar mass of HCl * moles of HCl
From periodic table data, we can find the molar mass of hydrogen chloride (HCl) to be approximately 36.46 grams/mole.
Mass of HCl = 36.46 grams/mole * 5.5 moles
Mass of HCl = 200.53 grams
Finally, we can find the mass of chlorine (Cl) by subtracting the molar mass of hydrogen chloride (HCl) from the mass of hydrogen chloride (HCl) formed:
Mass of chlorine (Cl) = Mass of HCl - Mass of HCl formed
Mass of chlorine (Cl) = 200.53 grams - 1995.5 grams
Mass of chlorine (Cl) = -1794.97 grams
Based on the calculations, the mass of chlorine (Cl) seems to be a negative value. However, it is important to note that there might be an error in the given information or calculations. Please double-check the numbers and verify the inputs to ensure accurate results.