CLARIFICATION: Peritectic halts

Peritectic halts

I have had a number of questions about peritectic halts and cooling curves. In all editions of the Atkins' solutions manuals, they get this wrong: there is a halt at the peritectic point on cooling curves (just like for eutectic points). See the example below from Physical Properties of Materials, Second Edition by Mary Anne White. Unfortunately, the slopes of the curves c and e are not correct: since there is very little (Na) (solid) during time period c, and significantly more KNa2(s) during period e, the slope should be more steep for c and less steep for e. The final slope g should be the least steep.

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UPDATE: Tutorial, Review and Other Things

UPDATE: Tutorial, Review and Final Exam

1. Tutorial #4 - Materials from L15 - L19
Date and Time: Tues. Dec. 8, 2:30-3:45 and 5:30-6:45 (same materials will be covered at each)
Location: 121 Biology (both tutorials)
Tutor: Jeff Bell

2. Final exam review session
Date and Time: Wed. Dec. 9, 10:30-11:30
Location: CHN G133
Instructor: Dr. Schurko

3. Final exam
Date and Time: Mon. Dec. 14, 12:00-3:00 pm
Location: Toldo HEC 100

Consultation times can be booked by clicking here! Please pick a slot, and then use the contact page to inform me what slot you would like.

The final exam is comprehensive, but 65-75% of the material will be from Lectures 15-19 (everything after the second mid-term). Only very top level concepts from earlier in the course will be examined - focus your studies on L15-L19.

The final exam format is:
1. Mandatory question, phase diagram, 16 marks.
2-9. Choose 7 of 8, 12 marks each.
Bonus. 4-6 marks
Total marks available: 100
Percentage of final grade: 45

You will be provided with
Equation Sheets 1-3, plus other useful information.

You must have the following to write the exam:
1. Pen (blue/black) or pencil
2. Ruler (you will need this for phase diagrams)
3. Calculator

Update: Tutorial #4 CANCELED

Update: Tutorial #4 CANCELED

Tutorial is rescheduled for: Tues. Dec. 8, 2:30-3:45 and 5:30-6:45 (same materials will be covered at each)

Tutorial #4
- Materials from L15 - L19
Location: TBA
Tutor: Jeff Bell

Tutorial #4 - Mon. Dec. 7 at 2:30 and 5:30

Tutorial #4 - Materials from L15 - L19
Date and Time: Mon. Dec. 7, 2:30-3:45 and 5:30-6:45 (same materials will be covered at each)
Location: 1123 Education (2:30) and 113 Biology (5:30)
Tutor: Jeff Bell