How Do You Calculate the Final Concentration of a Mixed HCl Solution?

In summary, molarity is a unit of concentration used in chemistry and is defined as the number of moles of a solute dissolved in one liter of solution. It can be calculated by dividing the number of moles of solute by the volume of the solution in liters, using the formula M = moles of solute / liters of solution. Molarity cannot be negative as it is a unit of concentration and must be a positive value. It is different from molality, which is based on the mass of the solvent and does not take into account changes in volume due to temperature.
  • #1
mugzieee
77
0
200 ml of a 6 M HCl solution is added to 400ml of a
1.50 M HCl solution. find the concentration of the
mixture.

here is what I think should be done:
(6M)(V concentration)=(.8L)(1.50M)

can i add the two volumes together?

Is this correct?
 
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  • #2
Yeah,the total volume will be 600ml.You have to find the total # of molesof HCl,though...

Daniel.
 
  • #3


Yes, your approach is correct. To find the concentration of the mixture, you can use the formula M1V1 = M2V2, where M1 and V1 are the initial concentration and volume, and M2 and V2 are the final concentration and volume. In this case, the initial concentration is 6 M and the volume is 200 ml, and the final concentration is what we are trying to find. Therefore, plugging in the values, we get (6 M)(200 ml) = (M2)(600 ml). Solving for M2, we get a final concentration of 2 M for the mixture. And yes, you can simply add the volumes together since they are both in the same units (ml). Great job on solving the problem!
 

Related to How Do You Calculate the Final Concentration of a Mixed HCl Solution?

1. What is molarity?

Molarity is a unit of concentration used in chemistry. It is defined as the number of moles of a solute dissolved in one liter of solution.

2. How do you calculate molarity?

Molarity can be calculated by dividing the number of moles of solute by the volume of the solution in liters.

3. What is the formula for molarity?

The formula for molarity is M = moles of solute / liters of solution.

4. Can molarity be negative?

No, molarity cannot be negative. It is a unit of concentration and therefore must be a positive value.

5. How is molarity different from molality?

Molarity is a unit of concentration based on the volume of the solution, while molality is a unit of concentration based on the mass of the solvent. Molarity takes into account changes in volume due to temperature, while molality does not.

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