1. Why is the color of acid-base indicator to change color?
because the reaction of the substance contained in the indicator substance.
not only can digunakasn litmus paper as indicator, man hibiscus Dapa also be used. Acid-base indicator of hibiscus flower, when in acid solution will give a red color, in the base solution will give a green color and the neutral solution is colorless.
because the reaction of the substance contained in the indicator substance.
not only can digunakasn litmus paper as indicator, man hibiscus Dapa also be used. Acid-base indicator of hibiscus flower, when in acid solution will give a red color, in the base solution will give a green color and the neutral solution is colorless.
2. How do I separate the mixture of base and acid ...?
if a mixture of acid and strong base clearly can not be separated anymore, because cations are very weak and anionnya not hydrolyzed
example NaOH + HCl ---> NaCl + H2O
Na + + H20 - / -> (not responding)
Cl-+ H2O - / -> (not responding)
but when a mixture of weak acids and bases, may be separated by cation / anionnya strong enough and can be hydrolyzed
Example 2 NH4OH + H2CO3 -> (NH4) 2CO3 + 2 H2O
NH4 + + H2O ---> NH3 + H3O +
CO3 ^ 2 - + H2O ---> H2CO3 + OH-
if a mixture of acid and strong base clearly can not be separated anymore, because cations are very weak and anionnya not hydrolyzed
example NaOH + HCl ---> NaCl + H2O
Na + + H20 - / -> (not responding)
Cl-+ H2O - / -> (not responding)
but when a mixture of weak acids and bases, may be separated by cation / anionnya strong enough and can be hydrolyzed
Example 2 NH4OH + H2CO3 -> (NH4) 2CO3 + 2 H2O
NH4 + + H2O ---> NH3 + H3O +
CO3 ^ 2 - + H2O ---> H2CO3 + OH-
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