A) 2.67
B) 1.34
C) 0.67
D) 0.33
Correct Answer: C
Solution :
Molarity \[=\frac{\text{weight}}{\text{molecular}\,\text{weight }\!\!\times\!\!\text{ volume}\,\text{of}\,\text{solution}}\] \[\Rightarrow \] \[3M=\frac{80}{40\times V}\] \[V=\frac{2}{3}=0.67\,L\]
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