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ChefCurtis
12.11.2019 •
Chemistry
For all of the following questions 20.00 ml of 0.200 m hbr is titrated with 0.200 m koh.
region 1: initial ph: before any titrant is added to our starting material
what is the concentration of h+ at this point in the titration?
m
what is the ph based on this h+ ion concentration?
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Ответ:
Answer :
The concentration of
before any titrant added to our starting material is 0.200 M.
The pH based on this
ion concentration is 0.698
Explanation :
First we have to calculate the concentration of
before any titrant is added to our starting material.
As we are given:
Concentration of HBr = 0.200 M
As we know that the HBr is a strong acid that dissociates complete to give hydrogen ion
and bromide ion
.
As, 1 M of HBr dissociates to give 1 M of![H^+](/tpl/images/0369/7231/fc541.png)
So, 0.200 M of HBr dissociates to give 0.200 M of![H^+](/tpl/images/0369/7231/fc541.png)
Thus, the concentration of
before any titrant added to our starting material is 0.200 M.
Now we have to calculate the pH based on this
ion concentration.
pH : It is defined as the negative logarithm of hydrogen ion concentration.
Thus, the pH based on this
ion concentration is 0.698
Ответ:
Pure substances are made up of a bulk quantity of individual atoms or molecules.
Each pure substance is made up of one of Individual atoms of the same type that are connected to form extended structures.
A chemical reaction happens when substances break apart or combine to form one or more new substances.
New substances form when bonds break and new bonds form.