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In a binary system of A and B the melting temperature of pure A is 1050°C and the melting temperature of pure B is 1900°C. At 1250°C, the α solid solution (containing 50% of B), the β solid solution (containing ...Read more
In a binary system of A and B the melting temperature of pure A is 1050°C and the melting temperature of pure B is 1900°C. At 1250°C, the α solid solution (containing 50% of B), the β solid solution (containing 80% of B) and liquid (containing 30% of B) are in three phase equilibrium. At room temperature, the maximum solubility of B in the α phase is 30% and the maximum solubility of A in the β phase is 10%. Sketch the phase diagram of A and B, showing the phases present in each area of the diagram. What is the reaction that takes place at 1250°C?
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An adiabatic vessel contains 1 kg of liquid aluminium at 700°C. Some Cr2O3 at 25°C was added into it, which cause the following exothermic reaction to occur: 2Al(l) + Cr2O3(s) = 2Cr(s) + Al2O3(s) The final temperature was 1000°C, and the final ...Read more
An adiabatic vessel contains 1 kg of liquid aluminium at 700°C. Some Cr2O3 at 25°C was added into it, which cause the following exothermic reaction to occur:
2Al(l) + Cr2O3(s) = 2Cr(s) + Al2O3(s)
The final temperature was 1000°C, and the final product mixture consisted Al2O3(s), Cr(s) and some unreacted Cr2O3(s). Calculate the weight of Cr2O3 addition.
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