Concentration cells

12 questions on Concentration cells from the Electrochemistry chapter: 2 NEET level, 5 JEE Main, 5 JEE Advanced. Each one opens with its answer and solution.

• The EMF of the concentration cell Zn | Zn^2+ (0.001 M) || Zn^2+ (0.1 M) | Zn at 298 K, in mV, is (nearest integer). JEE Main level
• For the cell Cu | Cu^2+ (0.01 M) || Cu^2+ (1.0 M) | Cu at 298 K (take 2.303RT/F = 0.0591 V), which statement is correct? NEET level
• Which of the following is a concentration cell? NEET level
• The cell Ag | Ag+ (c M) || Ag+ (0.5 M) | Ag has EMF 0.1182 V at 298 K with the left electrode as anode. The value of c in millimol per litre is (one decimal; ta... JEE Main level
• Two concentration cells are set up at 298 K: cell I is Zn | Zn^2+ (0.1 M) || Zn^2+ (0.4 M) | Zn and cell II is Ag | Ag+ (0.1 M) || Ag+ (0.4 M) | Ag. The ratio E... JEE Main level
• The EMF of the cell Cr | Cr^3+ (0.002 M) || Cr^3+ (0.2 M) | Cr at 298 K is (take 2.303RT/F = 0.0591 V) JEE Main level
• A hydrogen gas concentration cell Pt | H2 (p_1) | HCl (aq) | H2 (p_2) | Pt has both electrodes dipped in the same HCl solution, with p_1 > p_2. At 298 K, which ... JEE Advanced level
• A copper concentration cell is built as follows. The right compartment contains 0.50 M CuSO4. The left compartment is prepared by mixing 20 mL of 0.50 M CuSO4 w... JEE Advanced level
• A silver concentration cell has 0.1 M AgNO3 in the right compartment. The left compartment contains 0.1 M AgNO3 to which enough NaCl was added so that, after pr... JEE Advanced level
• The right compartment of a zinc concentration cell is prepared by dissolving 18.9 g of Zn(NO3)2 (molar mass 189 g mol^-1) in water to make 500 mL of solution. T... JEE Advanced level
• Consider the cell Pt | H2 (1 bar) | HCl (0.01 M) || HCl (0.1 M) | H2 (1 bar) | Pt at 298 K. Take 2.303RT/F = 0.0591 V and F = 96500 C mol^-1. Which statements a... JEE Advanced level
• The cell Pt | H2 (1 bar) | H+ (pH = x) || H+ (1 M) | H2 (1 bar) | Pt has EMF 0.236 V at 298 K. The value of x (nearest integer) is. JEE Main level