Which has more grams of NaCl? A 2 molar solution in 2 Liters, or a 3 molar solution in 1.5 Liters?
Which has more moles? M x L = moles.
grams = moles x molar mass.
To determine which solution has more grams of NaCl, we need to calculate the amount of NaCl in each solution using the molarity and volume.
First, let's calculate the number of moles of NaCl in each solution:
For the 2 molar solution in 2 liters:
Number of Moles = Molarity (M) * Volume (L)
Number of Moles = 2 M * 2 L
Number of Moles = 4 moles
For the 3 molar solution in 1.5 liters:
Number of Moles = Molarity (M) * Volume (L)
Number of Moles = 3 M * 1.5 L
Number of Moles = 4.5 moles
Now, we know the number of moles of NaCl in each solution. To convert moles to grams, we need to use the molar mass of NaCl:
Molar mass of NaCl = 22.99 g/mol (mass of sodium) + 35.45 g/mol (mass of chlorine)
Molar mass of NaCl = 58.44 g/mol
Now, let's calculate the mass of NaCl in each solution:
For the 2 molar solution:
Mass of NaCl = Number of Moles * Molar Mass
Mass of NaCl = 4 moles * 58.44 g/mol
Mass of NaCl = 233.76 grams
For the 3 molar solution:
Mass of NaCl = Number of Moles * Molar Mass
Mass of NaCl = 4.5 moles * 58.44 g/mol
Mass of NaCl = 263.48 grams
Therefore, the 3 molar solution in 1.5 liters has more grams of NaCl with 263.48 grams compared to the 2 molar solution in 2 liters with 233.76 grams.