NEET Chemistry Redox Reactions Questions Solved


When a solution containing 4.77 gm. of NaCl is added to a solution of 5.77 gm. of AgNO3, the weight of precipitated AgCl is [IIT 1978]

(1) 11.70 gm.

(2) 9.70 gm.

(3) 4.86 gm.

(4) 2.86 gm.

(3)                                 AgNO3    +    NaCl      →      AgCl   +   NaNO3  

Moles before mixing 5.77108+14+48       4.7758.5                   0             0

                                   = 0.0339        = 0.0815     (Here AgNO3 is limiting reactant, thus)

Moles after mixing            0            0.0815 – 0.0339        0.0339       0.0339

                                                         = 0.0476

∴ Moles of AgCl formed = 0.0339

∴ Mass of AgCl formed = Mol. mass × No. of moles = 143.5 × 0.0339 = 4.864 gm

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