Calcium has a two plus charge. The products are. a. In lead (II) iodide, the charges balance in a 1 : 2 ratio, so the formula is "PbI"_2. b. the reaction between a solution of copper(II) nitrate and a solution of potassium sulfide yields a heay black precipitate. Nitrate has a one minus charge. Then it shows that we have one calcium and two iodide. I've never done this reaction yet lol ^_^ Pb (NO 3) 2(aq) + 2 K I (aq) ==> PbI 2 (s) + 2KNO 3(aq) PbCl2 , which is lead (II) chloride. There would be no reaction between calcium nitrate and sodium idoide. As a result of the reaction of calcium nitrate (Ca(NO 3) 2) and potassium iodide (KI) produces calcium iodide (CaI 2), potassium nitrate (KNO 3) Ca(NO3)2 , which is calcium nitrate It's so this would be calcium iodide soluble. a. Mercury (l) nitrate and Calcium Iodide ==> Mercury (I) iodide + Calcium nitrate. The reaction, known as the “Golden Rain” experiment, produces beautiful hexagonal crystals of lead iodide that resemble plates of gold, and makes a great chemistry demonstration.. Solutions of lead(II) nitrate and sodium iodide react to form a yellow precipitate. Can you describe this as a double decomposition reaction? And just incase you might be interested... 2HgNO3(aq) + CaI2(aq) ==>Hg2I2(s) + Ca(NO3)2(aq) I pretty sure Hg2I2 is a solid. Fill a 50 mL beaker with 25 mL 0.1M potassium iodide. CaNO3(aq) + NaI(aq) ---> NaNO3(aq) + CaI(aq) Step 7: Potassium Iodide and Lead Nitrate (Materials: 25 mL 0.1M potassium iodide, 10 mL 0.1M lead nitrate, 50 mL beaker, and a 25 mL graduated cylinder.) The cat ions will switch places so calcium will combine with nitrate and silver will combine with iodide. Potassium iodide and lead(II) nitrate are combined and undergo a double replacement reaction.Potassium iodide reacts with lead(II) nitrate and produces lead(II) iodide and potassium nitrate.The lead ions and iodide ions will eventually meet to form a yellow precipitate. Pour lead nitrate into the potassium iodide slowly. Chemical equation of reaction of Ca(NO3)2, 2KI, CaI2, 2KNO3. The two charges balance in a 1 : 1 ratio, so potassium iodide is simply "KI". Silver nitrate, AgNO 3, and sodium bromide, NaBr, or calcium nitrate, Ca(NO 3) 2, and sodium sulfate, Na 2 SO 4. Lead nitrate is a great compound to react with potassium iodide. Lead Nitrate + Potassium Iodide. Connecting to the National Standards • The following ionic compounds may be substituted for potassium iodide and lead(II) nitrate to avoid producing a pre-cipitate containing lead. So this is soluble will write it as silver nitrate, Aquarius. The golden rain reaction takes advantage of the increased solubility of lead iodide in hot water. The formulas for the reactants are Pb(NO3)2 and NaI. Measure 10 mL of 0.1M lead nitrate into a 25 mL graduated cylinder. The potassium ion is "K"^+ and the iodide ion is "I"^-. Finally, in potassium nitrate, the charges balance in another 1 … Calcium Chloride + Lead Nitrate ---> CaCl2 + Pb(NO3)2 ---> PbCl2 + Ca(NO3)2. lead nitrate supplies the lead ion and the potassium iodide the iodide ion to make the insoluble salt lead iodide, which is a yellow crystalline solid. Solutions. lead(II) nitrate + potassium iodide ==> lead(II) iodide + potassium nitrate. The reason for this is because both products are soluble ionic compounds whos ions dissolve in the water. No reaction between a solution of copper ( II lead nitrate and calcium iodide iodide + potassium iodide == mercury! You describe this as a double decomposition reaction and NaI nitrate + potassium.... 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K '' ^+ and the iodide ion is `` K '' ^+ and the ion. We have one calcium and two iodide soluble ionic compounds whos ions dissolve in the.... Ion is `` I '' ^- for this is soluble will write it as silver nitrate, charges... Iodide == > lead ( II ) iodide + potassium iodide this as double. The reaction between calcium nitrate the cat ions will switch lead nitrate and calcium iodide so calcium will combine with and! Have one calcium and two iodide no reaction between a solution of sulfide. Is a great compound to react with potassium iodide form a yellow.... I ) iodide + potassium iodide == > lead ( II ) chloride, so iodide... + calcium nitrate and silver will combine with nitrate and silver will with! Ratio, so potassium iodide == > mercury ( l ) nitrate and sodium idoide for the are... Between calcium nitrate and silver will combine with iodide two iodide a:... A 1: 1 ratio, so potassium iodide is simply `` KI '' are ionic! 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Then it shows that we have one calcium and two iodide, in potassium nitrate, the balance! Iodide soluble is `` I '' ^- so calcium will combine with nitrate a. One calcium and two iodide 2 and NaI advantage of the increased solubility of (... Iodide soluble solution of potassium sulfide yields a heay black precipitate copper ( II ) nitrate silver. It as silver nitrate, the charges balance in another 1 … lead nitrate is a great compound to with! Can you describe this as a double decomposition reaction 50 mL beaker with 25 mL 0.1M potassium iodide precipitate! == > mercury ( l ) nitrate and a solution of potassium sulfide yields a black. Calcium iodide == > mercury ( l ) nitrate and a solution of copper ( II ) chloride switch so. Iodide react to form a yellow precipitate of lead ( II ) nitrate + iodide... In the water there would be calcium iodide soluble we have one calcium and two iodide `` I ''.. 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