Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

A flask contains a solution with an unknown amount of HCl. this solution is titrated with 0.0207 M NaOH. it takes 4.47ml of the NaOH solution to complete

the reactions. what is the mass of the HCl?
What is the molarity of the HCl required or the volume for complete titration?



This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
H Cl + Na OH ===>  H2 O + Na Cl

Number of moles in the 4.47 ml of 0.0207 M solution of Na OH :
         = 0.00447 * 0.0207  moles

So number of moles of H Cl in the solution mixed is same. 
Mass of HCl =  molecular mass  * number of moles
                     = 37.5 * 0.00447 * 0.0207  gms

1 5 1
click on thanks button above pls;;; select best answer
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts