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7 de may. de 2024 · The process occurring involves the equilibrium between chromate (VI), dichromate (VI) and hydrogen ions: 2CrO 42– (aq) (yellow) + 2H + (aq) ⇌ Cr 2 O 72– (aq) (orange) + H 2 O (l) The addition of acid encourages the equilibrium towards the right, producing more orange-coloured dichromate (VI) ions. The addition of hydroxide ions causes the ...
29 de abr. de 2024 · - **K2CrO4** (Cromato de potasio): 194.1903 g/mol - **Pb(NO3)2** (Nitrato de plomo (II)): 331.2098 g/mol - **NH4OH** (Hidróxido de amonio): 35.04580 g/mol. Para Ar2(SO4)3, parece haber un error en la fórmula química, ya que el argón no forma compuestos de este tipo.
16 de may. de 2024 · 0. No views 1 minute ago. A metal chloride original solution (i.e. O.S) on mixing with K2CrO4 solution gives a yellow preci... 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https ...
1 de may. de 2024 · The separation of K3VO4 and K2CrO4 plays an important role in the vanadium cleaner production process using concentrated alkaline solution as reaction media. Equilibrium solubility data for the KOH...
9 de may. de 2024 · This reaction can even be done in a test tube. Complete answer: The correct answer to this question is that when you mix silver nitrate and potassium chromate, precipitates of silver chromate appear. And potassium nitrate is formed as a by-product. The chemical formula of silver nitrate is \ [AgN { {O}_ {3}}\] and the chemical formula for ...
14 de may. de 2024 · The permanganate method was the oldest method commonly used in the water industry for COD determination. Nowadays, the dichromate procedure is most widely used instead of permanganate method.
13 de may. de 2024 · answered 1 day ago by Bhagvad (46.0k points) (a) K2CrO4. Oxidation no. of K is +1. Oxidation no. of O is −2. Oxidation no. of Cr be x. 2 (1) + x + 4 (−2) = 0, 2 + x − 8 = 0, x − 6 = 0, x = 6. So, Oxidation no. of Chromium in K2Cr2O4 is +6. (b) K2Cr2O7.
