Write down the reaction equations: Cr⇒CrCl₃⇒Cr (OH) ₃⇒Cr (SO₄) ₃ Ba⇒BaCl₂⇒Ba (NO₃) ₂⇒Ba (NO₂) ₂⇒Ba (OH) ₂
June 27, 2021
We compose the reaction equations:
2Сr + 3Cl2 = 2CrCl3 – the reaction of the compound;
CrCl3 + 3NaOH = Cr (OH) 3 + 3NaCl – ion exchange reaction;
2Cr (OH) 3 + 3H2SO4 = Cr2 (SO4) 3 + 6H2O – ion exchange reaction;
In the chain of transformations, the synthesis of chromium salts, which are used in the production of dyes, has been carried out.
We compose the equations for the synthesis of barium compounds:
Ba + 2HCl = BaCl2 + H2 – redox reaction;
BaCl2 + 2HNO3 = Ba (NO3) 2 + 2HCl – ion exchange reaction;
Ba (NO3) 2 + 2NaOH = Ba (OH) 2 + 2HNO3 – ion exchange reaction;
Barium salts are used in X-ray studies in medicine.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.