Chemistry questions
29404 published questions with worked solutions.
- A current of 96.5 A is passed for 18 min between nickel electrodes in 800 mL solution of 1 M Ni(NO_3)_2 . The molarity of...
- The molar conductances of NaCl, HCl and CH_3COONa at infinite dilution are 126.45, 426.16 and 91 ohm^ -1 ,cm^2 ,mol^ -1...
- During electrolysis of a solution of AgNO_3 , 9650 coulombs of charge pass through the electroplating bath, the mass of silver...
- A solution of a trivalent metal ion is electrolysed by a current of 5 A for 10 minutes, during this time 1.18 g of metal was...
- Which one of the following will increase the voltage of the cell? Sn_ (s) + 2Ag^+_ (aq) Sn^ 2+ _ (aq) + 2Ag_ (s)
- A solution containing one mole per litre of each Cu(NO_3)_2 , AgNO_3 , Hg_2(NO_3)_2 , Mg(NO_3)_2 is being electrolyzed by using...
- In the electrolysis of aqueous solution of CuSO_4 using copper electrodes, the process that takes place at the anode is _________
- The overall reaction taking place at anode during electrolysis of fused sodium chloride using suitable electrode is _________ [MH...
- For a spontaneous reaction the ΔG°, equilibrium constant (K) and E°cell will be respectively __________ [AIEEE 2005]
- On the basis of the electrochemical theory of aqueous corrosion, the reaction occurring at the cathode is __________ [MP PET...
- In which cell the free energy of a chemical reaction is directly converted into electricity?
- The standard emf of a galvanic cell involving cell reaction with n = 2 was found to be 0.295 V at 25℃. The equilibrium constant...
- Which of the following statement is INCORRECT with respect to metallic or electronic conductivity? [GUJ CET 2014]
- Two faradays of electricity is passed through a solution of CuSO_4 . The mass of copper deposited at the cathode is _______ (At....
- If the E^ _ cell for a given reaction has a negative value, then which of the following gives the CORRECT relationships for the...
- Reduction potentials of A, B, C and D are 0.8 V, 0.79 V, 0.34 V and −2.37 V respectively. Which element displaces all the other...
- For the reduction of silver ions with copper metal, the standard cell potential was found to be +0.46 V at 25 ℃. The value of...
- A current of 10 amperes is passed through acidulated water for 80 minutes. The volume of hydrogen gas liberated is _______
- The reaction 12 H_2(g) + AgCl(s) H^+(aq) + Cl^-(aq) + Ag(s) occurs in which of the following the galvanic cell?
- What will be the electrode potential of that hydrogen electrode which is filled with HCl solution of pH value 1.0?