Assertion `(A) : Cu` gets readily corroded in acidic aqueous solution.
Reason `(R) :` Free energy of the process is positive.

Assertion (A): Internal energy change in a cyclic process is zero. Reason (R ) : Internal energy is a state funciton.

Assertion (A): Internal energy change in a cyclic process is zero. Reason (R ) : Internal energy is a state funciton.

Assertion (A): Cu liberates H_(2)(g) from a dilute solution of HCl . Reason (R): Hydrogen is below Cu in the electrochemical series.

Assertion (A): Internal energy change in a cyclic process is zero Reason (R ): Internal energy is a state function

Assertion (A) : Cu cannot liberate hydrogen from acids. Reason (R ) : It positive electrode potential.

Assertion : Cu^+ ion is not stable in aqueous solution. Reason : Cu^+ contains 3d-filled subshell.