Refer to the information in Exercise 6.15(b) and sketch the cooling curves for liquid mixtures in which
Question:
Refer to the information in Exercise 6.15(b) and sketch the cooling curves for liquid mixtures in which x(B2H6) is
(a) 0.10,
(b) 0.30,
(c) 0.50,
(d) 0.80, and
(e) 0.95.
Data in Exercise 6.15(b)
Describe the phase changes that take place when a liquid mixture of 4.0 mol B2H6 (melting point 131 K) and 1.0 mol CH3OCH3 (melting point 135 K) is cooled from 140 K to 90 K. These substances form a compound (CH3)2OB2H6 that melts congruently at 133 K. The system exhibits one eutectic at x(B2H6) = 0.25 and 123 K and another at x(B2H6) = 0.90 and 104 K.
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As the liquid mixture is cooled different phase changes occur at different temperatures depending on ...View the full answer
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