The osmotic pressure of a solution of NaCl is
0.10 atm and that of a glucose solution is
0.20 atm. The osmotic pressure of a solution
formed by mixing 1 L of the sodium chloride
solution with 2 L of
the glucose solution is
x $\times$ 10–3 atm. x is _____. (nearest integer)
Answer (integer)
167
Solution
For NaCl : $\pi$<sub>1</sub> = 0.1 atm, v<sub>1</sub> = 1 L
<br><br>For Glucose: $\pi$<sub>2</sub> = 0.2 atm, v<sub>2</sub> = 2 L
<br><br>$\pi$<sub>mix</sub> = ${{{\pi _1}{v_1} + {\pi _2}{v_2}} \over {{v_1} + {v_2}}}$
<br><br>= ${{0.1 \times 1 + 0.2 \times 2} \over {1 + 2}}$
<br><br>= ${{0.5} \over 3}$ = ${{500} \over 3} \times {10^{ - 3}}$
<br><br>= 167 $\times$ 10<sup>-3</sup> atm
About this question
Subject: Chemistry · Chapter: States of Matter · Topic: Gas Laws
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