Chemistry questions
29404 published questions with worked solutions.
- The number of Coulombs required to liberate 0.224 dm^3 of chlorine at 0^ and 1 atm pressure is _____
- Faraday's first law of electrolysis gives the relation between _____
- Salts of x (At. Mass 7), y (At. Mass 27) and z (At. Mass 64) were electrolysed under identical conditions using the same quantity...
- If the same quantity of electricity is passed through two electrolytes, if A and B are the two substances liberated at the...
- Time required to deposit 90 g of Al from an electrolytic cell containing Al_2O_3 by a current of 965 A is _____ (At. Mass of Al =...
- Passage of 96,500 C of electricity liberates _____ L of O_2 at NTP during electrolysis
- The number of molecules of chlorine that would be deposited from molten NaCl in one minute by current of 300 milliamperes is _____
- When a current of 3 A is passed through an aqueous solution of a palladium salt, the mass of Pd metal deposited in 1 hour is 2.98...
- The cost of electricity required to deposit 1 g of Mg is rs. 3.00. The cost to deposit 8 g of Al is _____
- A metal 'M' is known to form the fluoride MF_2 . When 10 A of electricity is passed through the molten salt for 330 s, 1.950 g of...
- The initial cell potential of Daniel cell is _____
- The cells reaction of the galvanic cell Cu_ (s) |Cu^ 2+ _ (aq) ||Hg^ 2+ _ (aq) |Hg_ (l) is _____
- The life span of a Daniel cell is increased by _____
- Silver – silver chloride electrode is a _____ electrode
- For the electrochemical cell Ag_ (s) |AgCl_ (s) |KCl_ (aq) ||AgNO_ 3(aq) |Ag_ (s) the overall cell reaction is _____
- In the representation of galvanic cells, a double vertical line between two solutions indicates _____
- In galvanic cell, the salt bridge is used to _____
- The reaction 12 H_ 2(g) + AgCl_ (s) H^+_ (aq) + Cl^-_ (aq) + Ag_ (s) occurs in the galvanic cell
- In the Daniel cell, if the concentrations of Zn^ +2 and Cu^ +2 ions are doubled, the e.m.f. of the cell _____
- The standard cell potential of Zn|Zn^ 2+ _ (aq) ||Cu^ 2+ _ (aq) |Cu cell is 1.10 V. The maximum work obtained by this cell will...