Search results
Solid copper reacts with solid sulfur to form solid copper (I) sulfide. 2Cu (s)+S (s)→Cu2S (s)2Cu (s)+S (s)→Cu2S (s) Solid iron (III) oxide reacts with hydrogen gas to form solid iron and liquid water. Fe2O3 (s)+3H2 (g)→2Fe (s)+3H2O (l)Fe2O3 (s)+3H2 (g)→2Fe (s)+3H2O (l) We have an expert-written solution to this problem!
30 cze 2023 · For example, if you react copper(I) oxide with hot dilute sulfuric acid, you might expect to get a solution of copper(I) sulfate and water produced. In fact you get a brown precipitate of copper and a blue solution of copper(II) sulfate because of the disproportionation reaction.
Matter typically exists in one of three states: solid, liquid, or gas. Figure \(\PageIndex{1}\): Matter is usually classified into three classical states. From left to right: quartz (solid), water (liquid), nitrogen dioxide (gas).
29 lut 2008 · This demonstration involves some fantastic chemistry and makes an excellent introduction to the use of quantitative calculations to find the formula of a reaction product, copper sulfide. Students will also get the chance to see some of the allotropes of sulfur.
sulfur + oxygen → sulfur dioxide Non-metal oxides react with bases and neutralise them. Some non-metal oxides dissolve in water and, when they do, they produce acidic solutions.
The physical change you should observe is the copper-colored metal vanishing as the solution turns blue (from [Cu (H 2 O) 6] 2+, the hexaaquacopper ion) and a brown gas (NO 2) is evolved. Hydroxide ion (OH -) binds to the copper (II) ion even more strongly than does water.
Students remove the water of crystallisation from hydrated copper (II) sulfate by heating. Condensing the vapour produced in a second test tube collects the water. The white anhydrous copper (II) sulfate is then rehydrated and the blue colour returns.
