Throwing some scrap iron in a gold nitrate solution causes the gold metal to precipitate. How many liters of 0.5 M gold nitrate solution would react with 2.8x10<sup>23</sup> particles of iron metal?

Md Ariful Islam

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Au3+ + Fe = Fe3+ + Au

V(Au(NO3)3 solution) = 2.8x1023/(6.02x1023)/0.5 = 0.93 L

Answer: 0.93 L

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