A binary alloy of copper and nickel containing $20 \%$ weight Ni at a particular temperature coexist with solid phase having $26 \%$ weight Ni and liquid phase of $16 \%$ weight Ni. What is the weight ratio of solid and liquid phase?
Explanation
The lever rule is used to calculate the weight ratio of different phases in a binary alloy. It is based on the fact that the weight of the alloy is conserved. The weight ratio of solid and liquid phase can be calculated using the formula: (weight of Ni in solid phase - weight of Ni in alloy) / (weight of Ni in alloy - weight of Ni in liquid phase).
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