Question

roblem 7 (4 points total, 1 point each): (1) An ideal solution is formed when A and B are of ΔΗ istruench of the following relationship forthe enthalpy of mixing lution is formed when A and B are mixed. For this (a) AHm> 0; ich of the following is the crystal structure of pure ivon at room temperature? (a) BCC (b) FC (c) HCP (3) Which of the following elements will diffuse most rapidly in ir (b) Al (a) N the annealing will the steel experience the most significa drop? (a) Recovery (4) When a piece of cold worked steel was annealed, at whi (b) Recrystallization c)Grai

Answer 1

1) The enthalpy of mixing of an ideal solution $\Delta Hmix=0$ .

Hence correct option is B.

2) At room temperature crystal structure of iron is BCC while at higher temperature it is FCC. So, correct option is B.