What mass of NaCl do you need to make 71g of Cl2?
Well, if you want to make Cl2, you'll need to start with some NaCl. Now, I'm assuming you don't want a chemistry lesson, so let me give you a simple answer. You'll need twice the mass of Cl2 in NaCl. Since Cl2 has a molar mass of about 71 g/mol, you'll need 142 grams of NaCl. But hey, don't worry, unlike my jokes, chemistry doesn't have to be salty!
To determine the mass of NaCl needed to make 71g of Cl2, we need to use the molar ratio between NaCl and Cl2.
The balanced equation for the reaction between NaCl and Cl2 is:
2NaCl + Cl2 -> 2NaCl3
From the equation, we can see that 2 moles of NaCl are needed to produce 1 mole of Cl2. To find the mass of NaCl needed, we need to convert the mass of Cl2 to moles using the molar mass of Cl2.
The molar mass of Cl2 is 70.90 g/mol (35.45 g/mol for each Cl atom).
Number of moles of Cl2 = Mass of Cl2 / Molar mass of Cl2
= 71 g / 70.90 g/mol
≈ 1.00 mol
According to the molar ratio in the balanced equation, 1 mole of Cl2 is produced from 2 moles of NaCl. Therefore, we need to double the number of moles of Cl2 to find the moles of NaCl.
Number of moles of NaCl = 2 × Number of moles of Cl2
= 2 × 1.00 mol
= 2.00 mol
Finally, we can calculate the mass of NaCl needed using the molar mass of NaCl.
Mass of NaCl = Number of moles of NaCl × Molar mass of NaCl
= 2.00 mol × (22.99 g/mol + 35.45 g/mol)
= 2.00 mol × 58.44 g/mol
= 116.88 g
Therefore, you need 116.88 grams of NaCl to produce 71 grams of Cl2.
To determine the mass of NaCl required to produce 71g of Cl2, we need to consider the balanced chemical equation for the reaction between NaCl and Cl2.
The balanced equation for the reaction is:
2NaCl + Cl2 -> 2NaCl3
From the equation, we can see that it takes two moles of NaCl to produce one mole of Cl2. To find the molar mass of Cl2, we add the atomic masses of the two chlorine atoms, which is 35.45 g/mol.
Now, let's calculate the moles of Cl2:
Moles of Cl2 = Mass of Cl2 / Molar mass of Cl2
Moles of Cl2 = 71 g / 35.45 g/mol
Moles of Cl2 = 2 mol
Since the ratio between NaCl and Cl2 is 2:1, we need half the number of moles of NaCl compared to Cl2. Therefore, moles of NaCl needed = (1/2) * Moles of Cl2 = (1/2) * 2 mol = 1 mol.
Finally, we can calculate the mass of NaCl needed:
Mass of NaCl = Moles of NaCl needed * Molar mass of NaCl
To find the molar mass of NaCl, we add the atomic masses of sodium and chlorine, which are 22.99 g/mol and 35.45 g/mol, respectively.
Molar mass of NaCl = 22.99 g/mol + 35.45 g/mol = 58.44 g/mol
Mass of NaCl = 1 mol * 58.44 g/mol = 58.44 g
Therefore, you will need 58.44 grams of NaCl to produce 71 grams of Cl2.
how many moles of chlorine gas (CL2) is 71 grams. About two, I think. Work it out.
then NaCl will have two moles, now the mass of 2 moles of NaCl is 2*58g.
check that.