A) 0.2 M urea and 0.2 M NaCI
B) 0.1 M urea and 0.2 M \[MgC{{l}_{2}}\]
C) 0.1 M NaCI and 0.1 M \[N{{a}_{2}}S{{O}_{4}}\]
D) 0.1 M \[Ca{{(N{{O}_{3}})}_{2}}\] and 0.1 M \[N{{a}_{2}}S{{O}_{4}}\]
Correct Answer: D
Solution :
Both will furnish equal number of ions in the solution and have same concentration. Thus, the solutions will exert equal osmotic pressure ie, they are isotonic. \[Ca{{(N{{O}_{3}})}_{2}}C{{a}^{2+}}+2NO_{3}^{-}\,;\,\,i=3\] \[N{{a}_{2}}S{{O}_{4}}2N{{a}^{+}}SO_{4}^{2-}\,;\,\,i=3\] \[{{\pi }_{Ca{{(N{{O}_{3}})}_{2}}}}={{\pi }_{N{{a}_{2}}S{{O}_{4}}}}\] \[3\times 0.1\,RT=3\times 0.1\,RT\]
You need to login to perform this action.
You will be redirected in
3 sec
