Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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hi, experts :) please help with question 3. thank you (Please make it short 4-6 senteces if possible :)
Transcribed Image Text:1.3.3.5
Mixture with peritectic reaction
The term peritectic may be used loosely to mean all reactions in which two or more
phases (gas, liquid,solid) react to form a new stable phase at a
Liquid,
P = 1
defined temperature Tp, the peritectic temperature. Usually,
T Peritectic point
the term is used to refer to the reaction of a liquid and solid
Liquid +
solid Na,K
TLiquid
+ solid K.
Xíquid
+ solid Na
state to form another stable solid state. A peritectoid reaction
happens when two solid phases react to form a new solid
Solid
Solid
K+ Na K
Na,K + Na
phase. A
P = 2
P = 2
NazK
Na
Activity 1 – 7
1. From the phase diagram shown above, explain what happens during
cooling following the a1-az and bị-b4 isopleths.
2. How many degrees of freedom are there at the peritectic point?
3. Explain why at the peritectic temperature the reaction is referred to show
incongruent melting.
4. From the phase diagram, identify the peritectic and
peritectoid reactions. Write the reactions.
A
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