Electrochemical Series

The position of some metals in the electrochemical series in dectreasing electropositeve character is given as Mg gt Al gt Zn gt Cu gt Ag . What will happen if a copper spoon is used to stir a solution of aluminimum nitrate ?

The position of some metals in the electrochemical series in dectreasing electropositeve character is given as Mg gt Al gt Zn gt Cu gt Ag . What will happen if a copper spoon is used to stir a solution of aluminimum nitrate ?

The position of some metals in the electrochemical series in dectreasing electropositeve character is given as Mg gt Al gt Zn gt Cu gt Ag . What will happen if a copper spoon is used to stir a solution of aluminimum nitrate ?

Most metal oxide are thermally stable at temperature upto 1000^(@)C but the oxide of metals below hydrogen in the electrochemical series fairly. Thus HgO and Ag_(2)O decomposes on heating. Q. Which of the following compound cannot be thermally decomposed even at high temperature?

Assertion (A): Cu liberates H_(2)(g) from a dilute solution of HCl . Reason (R): Hydrogen is below Cu in the electrochemical series. (a)If both (A) and (R) are correct, and (R) is the correct explanation of (A) . (b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A) . (c)If (A) is correct, but (R) is incorrect. (d)If both (A) and (R) are incorrect.

Most metal oxide are thermally stable at temperature upto 1000^(@)C but the oxide of metals below hydrogen in the electrochemical series fairly. Thus HgO and Ag_(2)O decomposes on heating. Q. Which of the following salt salt does not give NO_(2) gas on heating?

Which of the following is not a correct statement about electrochemical series of reduction potentials ? (A)The standard electrode potential of hydrogen is 0.00 volts. (B)Active non-metals have positive reduction potentials. (C)Active metals have negative reduction potentials. (D)Metals which have positive reduction potentials are good reducing agent

Most metal oxide are thermally stable at temperature upto 1000^(@)C but the oxide of metals below hydrogen in the electrochemical series fairly. Thus HgO and Ag_(2)O decomposes on heating. Q. Correct code for following thermal decomposition reaction(s) evolving gas having equal number of sigma- and pi- bonds is : (i) BeCO_(3)overset(delta)(to) (ii) ZnSO_(4)overset(delta)underset(gammalt800^(@)C)(to) (iii) FeSO_(4)overset(300^(@)C)(to) (iv) (NH_(4))_(2)Cr_(2)O_(7)overset(delta)(to)

Define the Electrochemical reaction.

In an electrochemical process, a salt bridge is used: