Which of the salts undergoes hydrolysis with K2SiO3 or K2SO4? Write down the equation of each stage of hydrolysis
| January 17, 2021 | education
Which of the salts undergoes hydrolysis with K2SiO3 or K2SO4? Write down the equation of each stage of hydrolysis in molecular, complete and reduced ionic forms. What is the medium of an aqueous solution of salt?
Potassium silicate undergoes hydrolysis, since this salt is formed by a weak acid and a strong base (anionic hydrolysis). The solution medium will be alkaline.
The first stage of hydrolysis:
K2SiO3 + H2O = KHSiO3 + KOH
2K + + SiO32- + H2O = HSiO3- + OH- + 2K +
SiO32- + H2O = HSiO3- + OH-
Second stage of hydrolysis:
KHSiO3 + H2O = H2SiO3 + KOH
K + + HSiO3- + H2O = H2SiO3 + OH- + K +
HSiO3- + H2O = H2SiO3 + OH-
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