Quick Chemistry question, please show work :)

3. If 25.0 mL of a 4.525 M solution of HCl was poured into 112.0 mL of distilled water, the concentration of the resulting solution is _________ M.

Question

Quick Chemistry question, please show work :)

3. If 25.0 mL of a 4.525 M solution of HCl was poured into 112.0 mL of distilled water, the concentration of the resulting solution is _________ M.

photon336 · Answer

Do you know what molarity is?

rushwr · Answer

@Photon336  What is the answer u get for this !

australopithecus · Answer

Concentration 1*Volume 1 = Concentration 2*Volume 2

Volume 1 = 25.0mL
Concentration 1 = 4.525M

Volume 1 = 112.0 mL + 25.0mL
Concentration 2 = ?

use the formula above to solve for concentration 2

Note that you are diluting the solute so your concentration should go down so:
Concentration 1 > Concentration 2

photon336 · Answer

$$N _{a}V _{a} = N _{b}V _{b}$$

photon336 · Answer

$$\frac{ N _{a} V _{a} }{ V _{b} } = N _{b}$$

re arrange and solve for Nb your final concentration: 

@agree with australopithecus 

$$HCl _{aq} + H _{2}O _{l} --> H3O ^{+}(aq) +Cl ^{-} $$

$$K _{a}  HCL >>> 1 $$ so virtually no acid left.

australopithecus · Answer

The pKa of HCl is -3 so it will dissociate 100%

australopithecus · Answer

Dissociation doesn't matter though in this question