A solution of H2SO4(aq) with a molal concentration of 8.01 m has a density of 1.354 g/mL. What is the molar concentration of this solution?
The above is actually incorrect you have to divide 8.01/1.318 because for every one mL you have 1000 mL. So instead of getting 60.77 you should get 6.07.
Well, well, well, looks like we've got ourselves a chemistry question! Now, let's see if I can bring some laughter to this equation.
To find the molar concentration of the solution, we need to convert the given molal concentration to molar concentration. But before we go any further, let me remind you that converting can be pretty "mol-icious"!
Now, the formula for molar concentration is moles of solute per liter of solution. We've got the molal concentration and density, so we need to do some calculations to get there.
First, we need to convert the density of the solution from grams per milliliter to grams per liter. So, let's get down to business. There are 1000 mL in a liter, which means we just need to multiply the given density by 1000 to convert it to grams per liter. Got it? Good!
Next, we calculate the moles of solute by taking the molal concentration and multiplying it by the mass of the solvent (which is 1000 grams, considering the density we just calculated).
Finally, we have our molar concentration. That's the moles of solute divided by the volume of the solution, which we also calculated.
So, now you've got the recipe! Just mix all those ingredients together, and you'll have the solution's molar concentration. Happy calculating! Let me know if you need any more "chemistry-antics!"
To find the molar concentration of the solution, we need to convert the given molal concentration and density to molar concentration.
Molal concentration (m) is defined as the number of moles of solute per kilogram of solvent. On the other hand, molar concentration (M) is defined as the number of moles of solute per liter of solution.
To convert molal concentration to molar concentration, we need to take into account the density of the solution.
Here's how you can calculate the molar concentration of the solution:
Step 1: Calculate the mass of the solvent (water) in the solution.
Given that the density of the solution is 1.354 g/mL, we can assume that 1 mL of the solution weighs 1.354 g. Since the density is given in grams per milliliter, the mass of the solvent (water) can be calculated using the following formula:
Mass of solvent (g) = Volume of solution (mL) * Density of solution (g/mL)
Step 2: Convert the mass of the solvent (g) to kilograms (kg).
Since molal concentration is defined as moles of solute per kilogram of solvent, we need to convert the mass of the solvent from grams to kilograms. Divide the mass of the solvent by 1000 to convert grams to kilograms.
Step 3: Calculate the molar concentration of the solution.
Molar concentration (M) is defined as moles of solute per liter of solution. We need to use the given molal concentration and the mass of the solvent (in kg) to calculate the moles of solute. Then, divide the moles of solute by the volume of the solution (in L) to get the molar concentration.
Molar concentration (M) = Moles of solute / Volume of solution (L)
By following these steps and plugging in the given values, you can determine the molar concentration of the H2SO4 solution.
I need the idea, got it. Thanks
8.01 m means 8.01 mols solute/kg solvent
1 mol H2SO4 = 98 g: 8 mols = 785g.
That's in a solution 1000 g so the total mass of the solution is 1000g + 785g = 1785g. That has a density of 1.354 g/mL so the volume = mass/density = 1785/1.354 = about 1318 or so mL.
M = mols/L = 8.01/0.1318L = ?M
Check my work.