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CHEM HELP! The flask shown in the picture at the link below contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The...?
HELP CHEM HELP! I'M STUCK!
The flask shown in the picture at the link below contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.320 M NaOH.
How would I find the mL of NaOH and the Molarity(M) of HCl?
1 Answer
- hcbiochemLv 75 years agoFavorite Answer
You cannot calculate them both with the information give. You must know one of those in order to calculate the other.
If this is like an animated quiz/question, you would add NaOH to the solution until the solution just barely turns pink. Then, from the buret, you could read the volume of NaOH added.
Then, you can calculate the moles of NaOH added. This would equal the moles of HCl initially in the solution. From the moles of HCl and its volume (10 mL), you can calculate the concentration of HCl in the original solution.
Hope that helps a little....