2020年4月27日 · Your point is a classical X-Y problem. You are addressing a problem which was not asked and it does not address the main problem, what happens to pure copper metal when it is dipped in 1 M HCl. You are right, a small amount of copper oxide dissolves, but the chloro complex is only formed in concentrated acid not in dilute 1 M HCl.

2014年9月19日 · 5) Which one of the following metals does not react with hydrochloric acid? A. zinc B. magnesium C. iron D. copper E. aluminium The right answer must be copper, but why do...

2015年9月9日 · When hydrochloric acid is added to a sample of copper why does it look pink at first then form a pale blue solution ?

2015年9月28日 · in presence of CuCl2 in excess of concentrated HCl copper will slowly dissolve, forming [CuClX2]X2− [C u C l X 2] X 2 − anion, which is readily oxidized by air. So, yes, copper will slowly dissolve in hydrochloric acid bath, especially if some 'seed' copper chloride is present. The process is slow, though.

Copper does not react with H Cl acid, but copper oxide does react. Copper has a higher reduction potential than hydrogen, hence it does not react with non-oxidising acids like H Cl or dil. H 2SO4. But metal oxides are basic substances, and so they …

What will you observe when copper (Cu) is kept in hydrochloric acid (H Cl)? Slow release of H 2 gas Release of water in the form of vapour. Vigorous release of H 2 gas No reaction

2017年5月26日 · Copper does not react with hydrochloric acid, according to many sources. However, I found an experiment posted in a video, which I will try to repeat, that shows a copper pipe dissolving into HCl and plating a nail when the copper pipe and the nail are connected to a 12-volt battery, becoming electrodes.

Only those metals which lie above hydrogen in the reactivity series react with acids like HCl and dilute H 2SO 4 and displace hydrogen from them.

2019年2月18日 · 1)How can I tell if a reaction like Zn + Hcl -> ZnCl2 + H2 can happen or not? 2)How can I tell if a reaction forms a precipitate and how do I know where the arrow goes? Like 2 AgNO3 + K2CrO4 -> Ag2CrO4 (precipitate) + 2 KNO3 I might come back with some new questions, but for now, thanks.

Why copper reacts with hydrochloric acid to give copper chloride since hydrogen is more reactive than copper in the below reaction? Cu + HCl ------> CuCl2 + H2