Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Which of the following statements correctly explains why copper does not liberate hydrogen gas from acids such as hydrochloric acid?
A
Copper has a positive standard electrode potential, making it less reactive than hydrogen.
B
Copper forms a stable oxide layer that prevents reaction with acids.
C
Copper has a high enthalpy of atomisation which prevents it from reacting with acids.
D
Copper has a high hydration enthalpy that inhibits its reaction with acids.
Correct Answer
Option A
Detailed Explanation
Copper has a positive standard electrode potential (E V), indicating it is less reactive than hydrogen and cannot displace it from acids to liberate hydrogen gas.
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