If have 85% phosphoric acid (by weight), and mix 10mL of it with 75mL of water, what is your new concentration
I think its 10% wt... is this right?
Answer:
CfVf = CiVi + CaVa
Cf = (CiVi + CaVa) / (Vf)
Cf = (85% acid)(10ml) + (0% acid)(75ml) / (85ml)
Cf = (85% acid)(10ml) / (85ml)
Cf = [ 10% acid ]
Yes, you got it.
We start with
%(conc)*V(conc)=%(D)*V(D)
Where:
conc = concentration
V=Volume
and
D=diluted solution
therefore:
85%*10mL=x(85)
Solve for x
x=10% You are correct
The answers post by the user, for information only, FunQA.com does not guarantee the right.
More Questions and Answers: