What characteristics of phenolphthalein made it appropriate to use for tritration? is there a way to do experiments without it? how does phenolphtahalein 's endpoint relate to the equivalence point of the reaction?
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Ответ:
That means that in the equivalence point (well, just a tiny amount of the solution being added after reaching the equivalence point) the colour of the solution being tritraed will change.
If the solution being triated is an acid, it will remain colourless with the phenolphtalein, and it will turn pink at the equivalence point.
You can do experiments without phenolphthalein if you use a different indicator of pH (substances that change of color when pass from acid to basic or from basic to acid). Some other indicators of pH are methyl red, bromothymol blue and thymol blue. There are others.
Ответ:
Explanation:
factors affecting chemical bonds
a. electronegativity difference
b. size
c. charges
characteristics of Ionic bond
a. high melting point
b. they are soluble in polar solvents
c. they don't conduct electricity in solid state
characteristics of covalent bonds
a. they are insoluble in polar solvents
b. they don't conduct electricity
c. low melting point