InterviewSolution
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InterviewSolution
| 1. |
Which one of the following pairs of solution can we expect to be isotonic at the same temperature ? (a) 0.1 M urea and 0.1 M NaCl (b) 0.1 M urea and 0.2 M MgCl2 (c) 0.1 M NaCl and 0.1 M Na2SO4 (d) 0.1 M Ca(NO3)2 and 0.1 M Na2SO4 |
| Answer» <p class="MsoNormal" style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000"><strong>Correct option (d) 0.1 M Ca(NO<sub>3</sub>)<sub>2</sub> and 0.1 M Na<sub>2</sub>SO<sub>4</sub></strong></span></span></p><p class="MsoNormal" style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000"><strong>Explanation:</strong></span></span></p><p style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000">‘i’ for Ca(NO<sub>3</sub>)<sub>2</sub> and Na<sub>2</sub>SO<sub>4</sub> is 3 each. Their colligative molarity are also the same. Hence, 0.1 M Ca(NO<sub>3</sub>)<sub>2</sub> and 0.1 M Na<sub>2</sub>SO<sub>4</sub> solutions are isotonic.</span></span></p> | |