Compound A has a MW of 283. 0.423g of Compound A is dissolved in 13.5mL of water and 1mL of the solution added to 5mL of water to produce “solution A”. What is the concentration of Compound A in “solution A”?
To determine the concentration of Compound A in "solution A," we need to calculate the concentration in terms of moles per liter (M or mol/L).
First, we need to find the moles of Compound A in the initial solution.
1. Calculate the number of moles of Compound A:
- Mass of Compound A = 0.423g
- Molecular weight (MW) of Compound A = 283 g/mol
- Moles of Compound A = Mass / MW
= 0.423g / 283 g/mol
Next, we need to calculate the concentration of Compound A in the initial solution.
2. Determine the volume of the initial solution:
- Volume of Compound A solution = 13.5 mL
3. Convert the volume to liters:
- Volume of Compound A solution (L) = 13.5 mL x (1 L / 1000 mL)
Now, we can calculate the concentration of Compound A in the initial solution.
4. Concentration (M) of Compound A = Moles of Compound A / Volume of Compound A solution (L)
Now, we need to calculate the concentration of Compound A in "solution A" after dilution.
5. Determine the volume of "solution A":
- Volume of "solution A" = 1 mL + 5 mL
6. Convert the volume to liters:
- Volume of "solution A" (L) = (1 mL + 5 mL) x (1 L / 1000 mL)
Finally, we can calculate the concentration of Compound A in "solution A".
7. Concentration (M) of Compound A in "solution A" = Concentration (M) of Compound A in initial solution / Volume of "solution A" (L)
By following these steps, you can calculate the concentration of Compound A in "solution A."