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| 1. |
In an ore, the only oxidizable material is Sn^(2+). This ore is titrated with a dichromate solution containing 2.5g of K_(2)Cr_(2)O_(7) in 0.5 "litre". A 0.40 g sample of the ore required 10.0 cm^(3) of titrant to reach equivalence point. Calculate the percentage of tin in ore. |
| Answer» Solution :`3SN^(2+) + Cr_2O_7^(2-) + 14H^(+) to 3Sn^(4+) + 2Cr^(3+) + 7H_2O` | |