Titration Chemistry Problem: How to Calculate Volume and pH at Equivalence Point

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Discussion Overview

The discussion revolves around a chemistry homework problem related to titration, specifically focusing on calculating the volume of sodium hydroxide needed to reach the equivalence point, the initial pH of hypobromous acid, and the pH at the equivalence point. The scope includes conceptual understanding and application of relevant equations in titration chemistry.

Discussion Character

  • Homework-related
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant expresses difficulty in understanding titration and requests help with identifying the necessary formulas to solve the problem.
  • Another participant points out that the original poster has not shown their attempts at solving the question, which is a requirement for receiving help on the forum.
  • A different participant emphasizes the importance of understanding basic concepts such as pH calculations and stoichiometry, suggesting these are essential for solving the problem.
  • The original poster clarifies that they are not seeking direct answers but rather guidance on which formulas to use, indicating a lack of access to their study materials.
  • The original poster shares their negative feelings towards chemistry and their motivation to avoid it in future exams, highlighting their struggle with the subject.

Areas of Agreement / Disagreement

Participants generally agree that the original poster needs to demonstrate their understanding and attempts at solving the problem. However, there is a lack of consensus on how to best support the original poster in identifying the necessary formulas without providing direct answers.

Contextual Notes

There is an indication that the original poster may not have access to all necessary resources or prior knowledge, which could limit their ability to engage with the problem effectively. The discussion also reflects varying levels of frustration and differing expectations regarding homework assistance.

YoungStudent
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Sorry to disturb. I'm really bad at chemistry and i was hopping i could find some help...
My major doubt is about Titration for now and how to find what is asked even if i got the data needed.

Homework Statement



25.0 cm3 of 1.00 x 10-1 mol dm3 hypobromous acid ( HBrO ) solution is titrated with an aqueous solution of sodium hydroxide, NaOH(aq) with a concentration of 8.00 x10-2 mol dm-3


Homework Equations



Ka for hypobromous at 25º : 2.00 x 10-9
pKw of water at 25ºC : 14.0


The Attempt at a Solution



1-Calculate the volume of sodium hydroxide that must be added to reach the equivalent point?

2-Calculate the initial PH of the solution Hypobromous acid at 25º?

3- Calculate the PH at the equivalence point of the titration at 25º?



rather than the answers i would like someone to help me with which formulas i should use to solve it.

Thx in advance.
 
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You have nicely used the template to dodge the first homework rule of the site - you have to show your attempts at solving the question to receive help.

Browse this site: http://www.titrations.info/ - it contains answers to all your questions (and more).
 
Borek said:
You have nicely used the template to dodge the first homework rule of the site - you have to show your attempts at solving the question to receive help.

Browse this site: http://www.titrations.info/ - it contains answers to all your questions (and more).

I did not asked for the answers i just don't have my template with the formulas, therefore i don't know which ones to use
 
But you were taught some equations used to calculate pH, weren't you? You were also taught something about stoichiometry, about reaction balancing - these are the building blocks that are required to solve the problem.
 
Chemistry is the only subject i really dislike in school but i have to do it, my media from 0-100 would be near 90 without chemistry, but it lowers it to 75.

Therefore i decided that i would not take it to the final exams, but the teacher decided that based on this type of exercises he will do a last test.

The exercise isn't even an homework, i found it in a school exercise book, but the method to solve it wasnt there and i haven't got no idea how to do it. I pass the exame and I am done with chemistry.
 

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