A copper-nickel alloy of composition 45 wt% Ni - 55 wt% Cu is slowly heated from 1200 °C. What percentage of Ni is in the first liquid to form? Use the Cu-Ni equilibrium phase diagram shown below. Temperature (°C) 1500 1455° 1400 Liquidus L 1300 1280° α + L Solidus 1200 1240° α ୪ 1100 1085° 1000 Cu 20 40 60 80 Ni Weight percent nickel

A copper-nickel alloy of composition 45 wt% Ni - 55 wt% Cu is slowly heated from 1200 °C. What percentage of Ni is in the first liquid to form? Use the Cu-Ni equilibrium phase diagram shown below. Temperature (°C) 1500 1455° 1400 Liquidus L 1300 1280° α + L Solidus 1200 1240° α ୪ 1100 1085° 1000 Cu 20 40 60 80 Ni Weight percent nickel

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter16: Spontaneity Of Reaction

Section: Chapter Questions

Problem 48QAP

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A copper-nickel alloy of composition 70 wt% Ni - 30 wt% Cu is slowly heated from 1250 °C. What is percentage of copper in the first liquid phase that forms? Use the Cu-Ni equilibrium phase diagram shown below. 1500 Temperature (°C) 1455° 1400 Liquidus L 1300 1280° α + L Solidus 1200 1100 1085° 1240° α 1000 Cu 20 40 60 80 Ni Weight percent nickel
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