Igcse Model Questions Vol1 2018 Chemistry Question 16
Practice objective / multiple choice question 16 from the 2018 Igcse Model Questions Vol1 Chemistry examination.
A metal X is extracted from its oxide \(\mathrm{X_2O_3}\) by reduction with carbon according to the equation \(\mathrm{X_2O_3 + 3C \rightarrow 2X + 3CO}\). The atomic mass of X is 55.8 g mol\(^{-1}\). A sample of 150 g of \(\mathrm{X_2O_3}\) is reduced, and the process gives an 80 % yield based on the theoretical amount of metal. (a) Calculate the mass of metal X obtained. (b) The reactivity series (most reactive to least) is: K > Ca > Na > Mg > Al > Zn > Fe > Ni > Sn > Pb > H > Cu > Ag > Au. Based on this series, can metal X be extracted by reduction with carbon, or does it require electrolysis? Justify your answer.
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This is Igcse Model Questions Vol1 2018 Chemistry Question 16. It is one of the objective questions from the 2018 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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