Answer:
- <em>The function of an indicator in a titration is to </em><u>indicate the equivalence point.</u>
Explanation:
<em>Titration</em> is a procedure that uses the properties of the acid - base reactions to determine the mole concentration of an unknown solution from the known mole concentraion of other solution. One of the solution is the base and the other is the acid.
At the equivalence point, where the number of H⁺ ions is equal to the number of OH⁻ ions, there is a drastic change of the acidity (or alkalinity) of the solution.
Then, the chemical <em>indicators</em> are substances that change color at the equivalence point, telling the chemist that the equivalence point has been reached and the titration has finished.
The concentration of the HCL in the mixed solution is 32%
Considering the First solution containing HCl,
80 ml of 50% = 80 x (50/100)
= 80 x 0.5
= 40 ml of HCL
Considering the second solution containing HCl,
120 ml of 80% = 120 x (20/100)
= 120 x 0.2
= 24 ml of HCl
So, the combined solution will have = 40+ 24
= 64 ml of HCL
Since the combined volume of the two solutions was = 80+120
= 200 ml
As for finding the concentration of HCl in a solution, the required formula is to divide the volume of HCl by the combined volution of the solution.
Therefore, the concentration of HCl will be = 64/200
= 0.32
Which is 32% of HCl
To know more about the concentration of solutions refer to the link brainly.com/question/12247996?referrer=searchResults.
#SPJ4
Answer:
Explanation:
Hb(CO)4(aq) + 4O2(g) ⇄ Hb(O2)4(aq) + 4CO(g)
1 ) If we increase the concentration of CO(g) , the reaction above will proceed in reverse direction to decrease its concentration, according to Le Chatelier principle. Hence more of Hb(CO)4(aq) will be formed.
2 ) If we decrease the concentration of O₂ , then also , reaction will proceed in reverse direction . Hence concentration of Hb(CO)4(aq) will be increased .
<span>Human cells contain 23 chromosomes and has a total of 46
pairs of chromosomes. Depending on the length and morphology, it has seven
groups. They are arranged from largest to smallest. It has 22 pairs of
homologus chromosomes known as autosomes and 1 pair of sex chromosomes, a total
of 23 chromosomes. A male karyotype has a total of 46 chromosomes and gives a
pair of XY while a female karyotype has a total of 46 chromosomes and gives a
pair of XX. These pairing are responsible to the gender of the offspring.</span>