Αποτελέσματα Αναζήτησης
Illustrate the reaction of an insoluble metal oxide with a dilute acid to produce crystals of a soluble salt in this class practical. Includes kit list and safety instructions.
14 Απρ 2021 · You can imagine concentrated sulfuric acid as an oxidising agent which supplies [O]. The copper takes the [O] and become CuO while sulfuric acid become sulfur dioxide. Then CuO reacts with remaining sulfuric acid to form CuX2SOX4 C u X 2 S O X 4.
Copper(II) oxide or cupric oxide is an inorganic compound with the formula CuO. A black solid, it is one of the two stable oxides of copper, the other being Cu 2 O or copper(I) oxide (cuprous oxide). As a mineral, it is known as tenorite, or sometimes black copper.
As a result, hydroxide ion can displace water from the copper (II) ion, yielding copper hydroxide, Cu (OH) 2, a blue precipitate. Heating copper hydroxide produces copper oxide, CuO, a black solid. Copper oxide dissolves in acid, regenerating the copper (II) ion, which once again binds to water.
29 Αυγ 2023 · Copper(II) ion reacts with stoichiometric quantities of aqueous ammonia to precipitate light blue Cu(OH)2. Some basic salts may also form. \[\ce{Cu2+(aq) + 2NH3(aq) + 3H2O(l) <=> Cu(OH)2(s) + 2NH4+(aq)} \nonumber \] The precipitate dissolves in excess ammonia to form a dark blue complex ion:
The overall equation for the reaction between copper(II) oxide and dilute sulfuric acid is CuO(s) + H 2 SO 4 (aq) CuSO 4 (aq) + H 2 O(l) Oxide ions from the copper(II) oxide and hydrogen ions from the acid have combined to make water and aren't there any longer.
25 Ιουν 2018 · Explanation: This is simply an acid-base reaction... And it is good to do because CuSO4(aq) forms a lovely, blue-coloured solution due to the formation of [Cu{(OH)2}6]2+...i.e.
