Can anyone answer this question please.
(Determine the concentration of an aqueous NaCl solution if 31.5 mL are required to reach
the equivalence point when titrated with 25.0 mL of 0.20 M AgNO3.)
Since the reaction is 1:1
AgNO3 + NaCl ==> AgCl + NaNO3
You can use the simple fomula of
mL x M = mL x M. This can not be used with the ratio is other than 1:1.
61.0 mL of a 1.50 M solution is diluted to a volume of 258 mL. A 129-mL portion of that solution is diluted using 167 mL of water. What is the final concentration?
Calcuted mole fraction of HCl in a solution containing 24.8%HCl by mass
To determine the concentration of the aqueous NaCl solution, you need to use the concept of Stoichiometry and the balanced chemical equation between NaCl and AgNO3. Here's how you can approach it step by step:
1. Write the balanced chemical equation between NaCl and AgNO3:
NaCl + AgNO3 -> AgCl + NaNO3
2. Determine the stoichiometric ratio between NaCl and AgNO3:
Looking at the balanced equation, you can see that one mole of NaCl reacts with one mole of AgNO3 to form one mole of AgCl.
3. Calculate the number of moles of AgNO3 used:
The given information tells us that 25.0 mL of 0.20 M AgNO3 is used in the titration. Use the formula Molarity (M) = Moles (mol) / Volume (L) to calculate the number of moles of AgNO3 used:
Molarity (AgNO3) = 0.20 mol/L
Volume (AgNO3) = 25.0 mL = 0.0250 L
Moles (AgNO3) = Molarity (AgNO3) * Volume (AgNO3)
= 0.20 mol/L * 0.0250 L
4. Since the stoichiometric ratio between NaCl and AgNO3 is 1:1, the number of moles of NaCl used in the reaction is also equal to the number of moles of AgNO3 used.
5. Calculate the concentration of the NaCl solution:
The given information states that it requires 31.5 mL of the NaCl solution to reach the equivalence point. Convert it to liters:
Volume (NaCl) = 31.5 mL = 0.0315 L
Concentration (NaCl) = Moles (NaCl) / Volume (NaCl)
= Moles (AgNO3) / Volume (NaCl)
= (0.20 mol/L * 0.0250 L) / 0.0315 L
6. Calculate the concentration of the NaCl solution using the equation above.
By following these steps, you can determine the concentration of the aqueous NaCl solution.