- #1

taxidriverhk

- 11

- 0

## Homework Statement

Given balanced chemical reaction:

Ba(NO

_{3})

_{2}(aq) + Na

_{2}SO

_{4}(aq) → BaSO

_{4}(s) + 2NaNO

_{3}(aq)

Suppose 200 mL of Ba(NO

_{3})

_{2}and 200 mL of Na

_{2}SO

_{4}of unknown concentrations are mixed together and forms the reaction above. Then, there are 0.0120 M of NaNO

_{3}produced, and 0.0004 M of excess sulfate ion. Find the initial concentration of each reactant.

## Homework Equations

Molarity = number of moles/volume of solvent

## The Attempt at a Solution

I led x be the concentration of Ba(NO

_{3})

_{2}

and y be the concentration of Na

_{2}SO

_{4}

Then I used the law of conservation of mass to find the total mass of reactants and products, then wrote the equation below

5.6x + 28.4y = 0

But I am now not sure what to do next, do I need to find the volume of the solution produced or to do something else?

Please give me some hints or concepts so that I can figure it out, I will be extremely appreciated...