A) \[-\frac{5}{3}{}^\circ \text{C}\]
B) \[-\frac{5}{2}{}^\circ C\]
C) \[5{}^\circ C\]
D) \[0{}^\circ C\]
Correct Answer: D
Solution :
[d] \[{{\theta }_{mix}}=\frac{{{m}_{W}}{{\theta }_{W}}-\frac{{{m}_{i}}{{L}_{i}}}{{{S}_{W}}}}{{{m}_{i}}+{{m}_{W}}}\] \[=\frac{300\times 25-\frac{100\times 80}{1}}{100+300}=-1.25{}^\circ C\] Which is not possible. Hence \[{{\theta }_{mix}} = 0{}^\circ C\]
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