Scelta multipla
After adding sulfuric acid to copper metal, which copper compound is present in the solution?
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1. Intro to General Chemistry
Chemical Properties
Scelta multipla
Aqua regia is a mixture of which of the following substances?
A
Dilute hydrochloric acid and concentrated sulfuric acid
B
Concentrated hydrochloric acid and concentrated nitric acid
C
Concentrated hydrochloric acid and concentrated sulfuric acid
D
Concentrated sulfuric acid and concentrated nitric acid
Guida verificata passo dopo passo1
Understand that aqua regia is a special mixture used in chemistry to dissolve noble metals like gold and platinum, which are resistant to single acids.
Recall that aqua regia is composed of two concentrated acids mixed in a specific ratio to create a highly reactive solution.
Identify the acids involved: concentrated hydrochloric acid (HCl) and concentrated nitric acid (HNO\_3).
Recognize that the combination of these two acids produces reactive species such as nitrosyl chloride (NOCl) and chlorine gas (Cl\_2), which contribute to the dissolving power of aqua regia.
Conclude that the correct composition of aqua regia is concentrated hydrochloric acid and concentrated nitric acid.
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