2015年11月5日 · A zinc ion with the electron configuration "[Ar]3d"^10" has an oxidation number of +2. The electron configuration for a neutral zinc atom is "[Ar]3d"^10"4s"^2". A zinc 2+ ion has the electron configuration of "[Ar]3d"^10", as it has lost its two valence electrons "4s"^2". The oxidation number of an ion is the same as its charge.

"1.7 L" Zinc metal will react with dilute sulfuric acid to produce zinc sulfate, "ZnSO"_4, and hydrogen gas, "H"_2, which will bubble out of solution. The balanced chemical equation for this single replacement reaction looks like this "Zn"_text((s]) + "H"_2"SO"_text(4(aq]) -> "ZnSO"_text(4(aq]) + "H"_text(2(g]) uarr Notice that you have a 1:1 mole ratio between zinc …

2017年4月19日 · How do you write a stoichiometric equation for the reaction between zinc carbonate and nitric acid? Chemistry Chemical Reactions Balancing Chemical Equations 1 Answer

2016年11月25日 · "2.10 g" Start by writing the balanced chemical equation that describes this decomposition reaction "ZnCO"_ (3(s)) -> "ZnO"_ ((s)) + "CO"_ (2(g)) uarr Zinc carbonate undergoes thermal decomposition to produce zinc oxide and carbon dioxide. As you can see, all the compounds that take part in the reaction do so in 1:1 mole ratios to each other. Simply put, …

2018年5月31日 · It loses 2 electrons In the metal the protons have a combined charge of 30+, which is compensated for by the combined charge of 30- from the electrons. When 2 electrons are donated to another atom or group, the net charge of the zinc-ion is now 30+ minus 28- = 2+. Examples: Zn+Cl_2->Zn^(2+)+2Cl^- Zn+2H^+ ->Zn^(2+)+H_2

2017年4月14日 · Because zinc is a metal, that exhibits "metallic bonding....." And metallic bonding is proposed to be responsible for (i) the malleability (the ability to be beaten into a sheet), and (ii) the ductility (the ability to be drawn into a wire) that ALL metals possess. Why does metallic bonding confer these properties?

2017年6月29日 · Most halides are soluble (the exceptions....AgCl, Hg_2Cl_2, PbCl_2). The given reaction is a so-called "partner-exchange" or "methathesis" reaction, that is driven to the right by the insolubility of one of the products..

2016年2月29日 · 62% Start by writing a balanced chemical equation for this single replacement reaction "Zn"_text((s]) + color(red)(2)"AgCl"_text((aq]) -> "ZnCl"_text(2(aq]) + 2"Ag"_text((s]) Notice that you have a color(red)(2):1 mole ratio between silver chloride and zinc chloride. This tells you that the reaction should theoretically produce 1 mole of zinc chloride for every …

2015年8月25日 · Have a look if it makes sense... I considered quantities of Zinc in each alloy and the final amount as: Where x and y are the quantities in pounds of alloy 1 and 2. Solving the system I got: x=4.8 "pounds" of alloy 1 y=3.2 "pounds" of alloy 2

For example, zinc is above copper in the series. We predict that placing a strip of zinc metal in a copper(II) sulfate solution will produce metallic copper and zinc sulfate. Copper is below zinc in the series. We predict that a strip of copper placed into a zinc sulfate solution will not produce a …