Home
Class 11
CHEMISTRY
The position of some metals in the elect...

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 ?

A

The spoon gets coated with aluminium

B

Aan alloy of aluminium and copper is formed

C

No reaction occurs

D

The solution starts turning blue

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    NARENDRA AWASTHI ENGLISH|Exercise LEVEL-2|28 Videos
  • ELECTROCHEMISTRY

    NARENDRA AWASTHI ENGLISH|Exercise LEVEL-3|37 Videos
  • DILUTE SOLUTION

    NARENDRA AWASTHI ENGLISH|Exercise leval-03|23 Videos
  • GASEOUS STATE

    NARENDRA AWASTHI ENGLISH|Exercise Subjective problems|15 Videos

Similar Questions

Explore conceptually related problems

(a) When a bright silver object is placed in the solution of gold chloride, it acquires a golden tings but nothing happens when it is placed in solution of copper chloride. Explain this behaviour of silver. [Given : E_(Cu^(2+//)Cu)^(@)=+0.34 V, E_(Ag^(+//)Ag)^(@) =+0.80 V, E_(Au^(3+//)Au)^(@) =+1.40V ] (b) Consider the figure given above and answer the following questions : (i) What is the direction of flow of electrons? (ii) Which is anode and which is cathode? (iii) What will happen if the salt bridge is removed ? (iv) How will concentration of Zn^(2+) and Ag^(+) ions be affected when the cell functions ? (v) How will concentration of these ions be affected when the cell becomes dead ?

A pulse is propagating on a long stretched string along its length taken as positive x-axis. Shape of the string at t = 0 is given by y = sqrt(a^2 - x^2) when |x| lt= a = 0 when |x| gt= a . What is the general equation of pulse after some time 't' , if it is travelling along positive x-direction with speed V?

Assertion (A) : Metallic character order is K gt Mg gt Al gt B . Reason (R ) : Along the period (rarr) metallic character increases and decreases down the group (darr) .

In the figure shown a massless spring of stiffness k and natural length l_(0) is rigidly attached to a block of mass m and is in vertical position. A wooden ball of mass m is released from rest to fall under gravity. Having fallen a height h the ball strikes the spring and gets stuck up in the spring at the top. What should be the minimum value of h so that the lower block will just lose contact with the ground later on ? Assume that l_(0) gt gt (4mg)/(k) . Neglect any loss of energy. (Given k=mg//2 )

The following diagram shown as electrochemical cell in which the respective half-cells contains aqueous 1.0M solutions of the salts XCl_(2) and YCl_(3) . Given that 3X(s)+2Y^(3+) (aq) to 3X^(2)(aq)+2Y(s) epsi_("cell") gt 0 Which of the following statements is correct? I. The electrode made from metal X has positive polarity II. Electrode Y Is the anode II. Tho flow of electrons is from Y to X IV. The reaction at electrode X is an oxidation V. The salt bridge would most likely contain silver nitrate

Electrolysis is an important technique for extraction of metals, and each ion of the solution needs a minimum voltage to get discharged and this value is expressed in terms of discharge potential. For some metal ions the discharge potentials follow the order given below : Li^(+) gt K^(+) gt Ca^(2+) gt Na^(+) gt Mg^(2+) gt Al^(3+) gt Zn^(2+) gt Fe^(2+) gt Ni^(2+) gt H_(3)O^(+) gt Cu^(2+) gt Hg_(2)^(2+) gt Ag^(+) gt Au^(3+) For some anions the discharge potentials are in the order : SO_(4)^(2-) gt NO_(3)^(-) gt OH^(-) gt Br^(-) gt I^(-) When conc. H_(2)SO_(4) is electrolysed with high current using Pt electrodes, the product obtained at anode is :

Electrolysis is an important technique for extraction of metals, and each ion of the solution needs a minimum voltage to get discharged and this value is expressed in terms of discharge potential. For some metal ions the discharge potentials follow the order given below : Li^(+) gt K^(+) gt Ca^(2+) gt Na^(+) gt Mg^(2+) gt Al^(3+) gt Zn^(2+) gt Fe^(2+) gt Ni^(2+) gt H_(3)O^(+) gt Cu^(2+) gt Hg_(2)^(2+) gt Ag^(+) gt Au^(3+) For some anions the discharge potentials are in the order : SO_(4)^(2-) gt NO_(3)^(-) gt OH^(-) gt Br^(-) gt I^(-) When aqueous solution of cupric bromide is electrolyzed the product obtained at cathode will be :

Electrolysis is an important technique for extraction of metals, and each ion of the solution needs a minimum voltage to get discharged and this value is expressed in terms of discharge potential. For some metal ions the discharge potentials follow the order given below : Li^(+) gt K^(+) gt Ca^(2+) gt Na^(+) gt Mg^(2+) gt Al^(3+) gt Zn^(2+) gt Fe^(2+) gt Ni^(2+) gt H_(3)O^(+) gt Cu^(2+) gt Hg_(2)^(2+) gt Ag^(+) gt Au^(3+) For some anions the discharge potentials are in the order : SO_(4)^(2-) gt NO_(3)^(-) gt OH^(-) gt Br^(-) gt I^(-) The product formed at anode and cathode, when dilute H_(2)SO_(4) is electrolysed are :

Electrolysis is an important technique for extraction of metals, and each ion of the solution needs a minimum voltage to get discharged and this value is expressed in terms of discharge potential. For some metal ions the discharge potentials follow the order given below : Li^(+) gt K^(+) gt Ca^(2+) gt Na^(+) gt Mg^(2+) gt Al^(3+) gt Zn^(2+) gt Fe^(2+) gt Ni^(2+) gt H_(3)O^(+) gt Cu^(2+) gt Hg_(2)^(2+) gt Ag^(+) gt Au^(3+) For some anions the discharge potentials are in the order : SO_(4)^(2-) gt NO_(3)^(-) gt OH^(-) gt Br^(-) gt I^(-) A mixture containing chlorides of sodium, calcium and zinc is electrolysed in presence f wate. The product obtained at cathode will be :