cuso4 + ki precipitate

(a) Which of the following reactions will produce a precipitate? O NaOH(aq) + MgCl2(aq) O CuSO4(aq) + Fe(NO3)2(aq) → O KI(aq) + Zn(NO3)2(aq) - o NaOH(aq) + KNO3(aq) - Copper (I) iodide precipitate in a conical flask. Notice that only 4 of the 6 water molecules are replaced. Scoop a small amount of KI into the water directly opposite the Pb(NO3)2; A precipitate of PbI2 will form near the center of the dish. There are three main steps for writing the net ionic equation for AgNO3 + KI = AgI + KNO3 (Silver nitrate + Potassium iodide). Demo Time: ~1 minute. Also, the ones formed by KI (aq) + Pb(NO3)2 (aq) and KI (aq) + CuSO4 (aq) were yellow because both resulting precipitates had iodide ions in them. Favourite answer. $$\ce{2 CuSO4 + 4 KI -> 2 CuI v + I2 + 2 K2SO4}\tag{counterions}$$ Or maybe you decide that only $\ce{KI}$ is important, then of course this becomes: $$\ce{2 Cu^2+ + 4 KI -> 2 CuI v + I2 + 4 K+}\tag{only KI}$$ Finally, you will typically have an excess of $\ce{KI}$, so that that can further react with the iodine generated to redissolve it. That precipitate dissolves if you add an excess of ammonia. Copper has potent biocidal properties and is used to eliminate bacteria, viruses and parasites [L1828], [L1839]. Click hereto get an answer to your question ️ Excess of KI reacts with CuSO4 solution and then Na2S2O3 solution is added to it. Write balanced equations for all the precipitation reactions that occur: NaOH + CuSO4 NaOH + AgNO3 NaOH + CoCl2 KI + AgNO3 Oh and also, if someone could be so kind as to explain it to me that would be great. Answer Save. Balance CuSO4*5H2O + H2S = CuS + H2SO4 + H2O chemical equation or reaction using this calculator! Acknowledgment. 8 Answers. 167) solution when added in 10ml 0.03N CuSO4 (generally the strength of the supplied CuSO4 solution), strength of KI solution becomes (5ml x 0.3N = 15ml x X) 0.1N. Which of the statement is incorrect for this reaction? 5H 2 O), the most commonly encountered salt, is bright blue. What is the precipitate and state of matter for the products? Thanks! Copper sulphate (CuSO4, left) and potassium iodide (KI, right) react to produce potassium sulphate and copper (I) iodide. Note: You might wonder why this second equation is given starting from the original hexaaqua ion rather than the neutral complex. For whatever reason this equation has stumped me. pisgahchemist. Lv 7. However, we were curious why a yellowish brown precipitate was produced when potassium iodide and copper(II) sulfate were mixed, because the resulting precipitate involved both copper and iodide. Copper is an essential mineral that plays a key role in many physiological processes, including angiogenesis, skin generation and expression and stabilization of skin proteins. Safety Pb(NO3)2 is toxic. I'm just so confused by precipitation reactions :S … The copper (I) iodide is a white precipitate whilst the potassium sulphate remains in solution. Care should be taken to avoid breathing KI dust. The balanced equation will appear above. On the other hand, normality of 0.03N CuSO4 in reaction mixture is 0.02N (10ml x 0.03N = 15ml x X). 5ml 0.30N KI (eq. wt. Relevance. What does KI + CuSO4 produce? The ammonia replaces water as a ligand to give tetraamminediaquacopper(II) ions. Margaret Asirvatham & Lyn Pierce, Summer 1987 Lora Ruffin and Michael Polk, Summer 2009 So the KI is added 5 times in excess. Best Answer: It's CuSO4. 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