Question

Caustic soda is 19.1 M NaOH and is diluted for household use. What is the household concentration if 10 mL of the concentrated solution is diluted to 400 mL?

Answer 1

Hello!

To calculate the household concentration of NaOH we need to use the dilution formula, clearing for M2, as you can see in the equation below:


`M1*V1=M2*V2 \\ \\ V2= (M1*V1)/(V2)`

Now, we input the values from the data we have onto this equation. M1=19,1 M; V1=10 mL; V2=400 mL, and solve the equation to get the result:


`V2= (M1*V1)/(V2)= (19,1M*10mL)/(400 mL)=0,48M`

So, the household concentration of NaOH will be 0,48 M

Have a nice day!