2016年6月17日 · The zinc ion will have a charge of +2 and the bromide ion has a charge of -1 because it is a halogen. Combining the ions in a 1:2 ratio produces a compound which is electrically neutral. Zinc can sometimes have other oxidation states …

Writing ionic formulas requires knowing the charges of ions in the compound. In general, the charge of the positive ion is written on the negative ion and the charge of the negative ion is written on the positive ion creating a cross-over. For example, if the Calcium ion is +2 and Chloride ion is -1, then Calcium Chloride is written CaCl2.

Chlorine gas, #Cl_2#, reacts with potassium bromide, #KBr#, to form potassium chloride and bromine, #Br_2#. How do you write the balanced equation for this single-displacement reaction? Potassium chlorate, #KClO_3#, decomposes to form potassium chloride, #KCl# and oxygen gas.

2018年1月26日 · This reaction is called elimination of bromine from 1,3-dibromopropane. 1,3-dibromopropane is cyclized by zinc. Our reactants are heated in an organic solvent. As a reaction product we have cyclopropane and zinc bromide.

2018年4月25日 · In the laboratory you are asked to make a 0.375 m manganese(II) bromide solution using 14.4 grams of manganese(II) bromide. How much water should you add? Chemistry

2016年11月11日 · Zn(s)+2HCl(aq)->ZnCl_2(aq)+H_2(g) The net reaction is Zn(s)+2H^+(aq) ->Zn^(2+)(aq)+H_2(g) The Cl^- ions are spectators - they don't change. This experiment includes the reaction of zinc with hydrochloric acid. The experiment compares reactivity of three metals; magnesium, zinc and copper. The video includes a discussion of writing balanced equations …

2015年12月8日 · Zn(s) + Cu(NO_3)_2(aq) rarr Zn(NO_3)_2(aq) + Cu(s) Zinc is a more active metal than copper (it lies higher up the activity series). Therefore zinc metal will displace copper from aqueous solution, resulting in deposition of a copper plate. Zinc reduces the copper ion, and the copper ion oxidizes the zinc.

2016年2月20日 · Do you mean the Reformatsky reaction? This is the zinc analogue of the famous Grignard reagent. An alpha-halo ester is treated with zinc dust to give an enolate: X-CH_2-C(=O)OR + Zn rarr XZnCH_2C(=O)OR The zinc enolate is then treated with an acetone. ROC(=O)CH_2ZnX + R_1-C(=O)-R_2 rarr R_1R_2C(-OZnX)(CH_2C(=O)OR) The zinc …

2017年5月1日 · Well, zinc carbonate is fairly insoluble so..... CO_3^(2-) + Zn^(2+) rarr ZnCO_3(s)darr What becomes of the acetate and potassium ions? How did I know that zinc carbonate was insoluble? How else by learning it by rote? "All the salts of the alkali metals (and" NH_4^+), "and all the acetates are soluble." "All nitrates are soluble."

2018年2月25日 · (a) Magnesium metal is placed into hydrobromic acid solution, forming hydrogen gas and aqueous magnesium bromide. (b) When heated, solid calcium chlorate decomposes into calcium chloride solid, releasing oxygen gas. (c) Solutions of barium bromide and sodium phosphate combine to form solid barium phosphate and aqueous sodium bromide.