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If I add water to 100 ml of a 0.15 M NaOH solution until the final volume is 150 ml, what is the molarity of the diluted solution be?

Sagot :

Answer:

Approx.  

0.10

 

m

o

l

L

1

Explanation:

Concentration

 

=

 

MOLES of SOLUTE

Volume of SOLUTION

So all we need to is to calculate the one quantity;  

Volume of SOLUTION

has been specified to be  

150

 

m

L

.

So,  

MOLES of SOLUTE

 

=

 

0.15

m

o

l

L

1

 

×

 

100

×

10

3

L

 

=

 

?

?

mol

; this was our starting solution.

And final  

CONCENTRATION

 

=

0.15

m

o

l

L

1

×

100

×

10

3

L

150

×

10

3

L

 

=

 

?

?

m

o

l

L

1