05. Isotonic Solution
SOLUTIONS

277544 At $25^{\circ} \mathrm{C}$, at $5 \%$ aqueous solution of glucose (molecular weight $=180 \mathrm{~g} \mathrm{~mol}^{-1}$ ) is isotonic with a $\mathbf{2 \%}$ aqueous solution containing and unknown solute, What is the molecular weight of the unknown solute?

1 60
2 80
3 72
4 63
5 98
SOLUTIONS

277547 Which of the following make up an isotonic triad?

1 ${ }_{32}^{78} \mathrm{Ge},{ }_{33}^{77} \mathrm{As},{ }_{31}^{74} \mathrm{Ga}$
2 ${ }_{18}^{40} \mathrm{Ar},{ }_{19}^{40} \mathrm{~K},{ }_{20}^{40} \mathrm{Ca}$
3 ${ }_{92}^{233} \mathrm{U},{ }_{90}^{232} \mathrm{Th},{ }_{94} 239 \mathrm{Pu}$
4 ${ }_{6}^{13} \mathrm{C},{ }_{7}^{12} \mathrm{C},{ }_{7}^{14} \mathrm{~N}$
5 ${ }_{6}^{14} \mathrm{C},{ }_{8}^{16} \mathrm{O},{ }_{7}^{15} \mathrm{~N}$
SOLUTIONS

277548 A 5.25\% solution of a substance is isotonic with a $1.5 \%$ solution of urea (molar mass $=60 \mathrm{~g} \mathrm{~mol}^{-}$ ${ }^{1}$ ) in the same solvent. If the densities of both the solutions are assumed to be equal to $1.0 \mathrm{~g}$ $\mathrm{cm}^{-3}$, molar mass of the substance will be

1 $90.0 \mathrm{~g} \mathrm{~mol}^{-1}$
2 $115.0 \mathrm{~g} \mathrm{~mol}^{-1}$
3 $105.0 \mathrm{~g} \mathrm{~mol}^{-1}$
4 $210.0 \mathrm{~g} \mathrm{~mol}^{-1}$
SOLUTIONS

277550 What is the amount of urea dissolved per litre if aqueous solution is isotonic with $10 \%$ cane sugar solution? (mol. wt. of urea $=60$ )

1 $200 \mathrm{~g} / \mathrm{L}$
2 $19.2 \mathrm{~g} / \mathrm{L}$
3 $17.54 \mathrm{~g} / \mathrm{L}$
4 $16.7 \mathrm{~g} / \mathrm{L}$
SOLUTIONS

277552 A solution containing $10 \mathrm{~g}$ per $\mathrm{dm}^{3}$ of urea $\left(\right.$ molecular mass $\left.=60 \mathrm{~g} \mathrm{~mol}^{-1}\right)$ is isotonic with a $5 \%$ solution of a non-volatile solute. The molecular mass of this non-volatile solute is

1 $200 \mathrm{~g} \mathrm{~mol}^{-1}$
2 $250 \mathrm{~g} \mathrm{~mol}^{-1}$
3 $300 \mathrm{~g} \mathrm{~mol}^{-1}$
4 $350 \mathrm{~g} \mathrm{~mol}^{-1}$
SOLUTIONS

277544 At $25^{\circ} \mathrm{C}$, at $5 \%$ aqueous solution of glucose (molecular weight $=180 \mathrm{~g} \mathrm{~mol}^{-1}$ ) is isotonic with a $\mathbf{2 \%}$ aqueous solution containing and unknown solute, What is the molecular weight of the unknown solute?

1 60
2 80
3 72
4 63
5 98
SOLUTIONS

277547 Which of the following make up an isotonic triad?

1 ${ }_{32}^{78} \mathrm{Ge},{ }_{33}^{77} \mathrm{As},{ }_{31}^{74} \mathrm{Ga}$
2 ${ }_{18}^{40} \mathrm{Ar},{ }_{19}^{40} \mathrm{~K},{ }_{20}^{40} \mathrm{Ca}$
3 ${ }_{92}^{233} \mathrm{U},{ }_{90}^{232} \mathrm{Th},{ }_{94} 239 \mathrm{Pu}$
4 ${ }_{6}^{13} \mathrm{C},{ }_{7}^{12} \mathrm{C},{ }_{7}^{14} \mathrm{~N}$
5 ${ }_{6}^{14} \mathrm{C},{ }_{8}^{16} \mathrm{O},{ }_{7}^{15} \mathrm{~N}$
SOLUTIONS

277548 A 5.25\% solution of a substance is isotonic with a $1.5 \%$ solution of urea (molar mass $=60 \mathrm{~g} \mathrm{~mol}^{-}$ ${ }^{1}$ ) in the same solvent. If the densities of both the solutions are assumed to be equal to $1.0 \mathrm{~g}$ $\mathrm{cm}^{-3}$, molar mass of the substance will be

1 $90.0 \mathrm{~g} \mathrm{~mol}^{-1}$
2 $115.0 \mathrm{~g} \mathrm{~mol}^{-1}$
3 $105.0 \mathrm{~g} \mathrm{~mol}^{-1}$
4 $210.0 \mathrm{~g} \mathrm{~mol}^{-1}$
SOLUTIONS

277550 What is the amount of urea dissolved per litre if aqueous solution is isotonic with $10 \%$ cane sugar solution? (mol. wt. of urea $=60$ )

1 $200 \mathrm{~g} / \mathrm{L}$
2 $19.2 \mathrm{~g} / \mathrm{L}$
3 $17.54 \mathrm{~g} / \mathrm{L}$
4 $16.7 \mathrm{~g} / \mathrm{L}$
SOLUTIONS

277552 A solution containing $10 \mathrm{~g}$ per $\mathrm{dm}^{3}$ of urea $\left(\right.$ molecular mass $\left.=60 \mathrm{~g} \mathrm{~mol}^{-1}\right)$ is isotonic with a $5 \%$ solution of a non-volatile solute. The molecular mass of this non-volatile solute is

1 $200 \mathrm{~g} \mathrm{~mol}^{-1}$
2 $250 \mathrm{~g} \mathrm{~mol}^{-1}$
3 $300 \mathrm{~g} \mathrm{~mol}^{-1}$
4 $350 \mathrm{~g} \mathrm{~mol}^{-1}$
SOLUTIONS

277544 At $25^{\circ} \mathrm{C}$, at $5 \%$ aqueous solution of glucose (molecular weight $=180 \mathrm{~g} \mathrm{~mol}^{-1}$ ) is isotonic with a $\mathbf{2 \%}$ aqueous solution containing and unknown solute, What is the molecular weight of the unknown solute?

1 60
2 80
3 72
4 63
5 98
SOLUTIONS

277547 Which of the following make up an isotonic triad?

1 ${ }_{32}^{78} \mathrm{Ge},{ }_{33}^{77} \mathrm{As},{ }_{31}^{74} \mathrm{Ga}$
2 ${ }_{18}^{40} \mathrm{Ar},{ }_{19}^{40} \mathrm{~K},{ }_{20}^{40} \mathrm{Ca}$
3 ${ }_{92}^{233} \mathrm{U},{ }_{90}^{232} \mathrm{Th},{ }_{94} 239 \mathrm{Pu}$
4 ${ }_{6}^{13} \mathrm{C},{ }_{7}^{12} \mathrm{C},{ }_{7}^{14} \mathrm{~N}$
5 ${ }_{6}^{14} \mathrm{C},{ }_{8}^{16} \mathrm{O},{ }_{7}^{15} \mathrm{~N}$
SOLUTIONS

277548 A 5.25\% solution of a substance is isotonic with a $1.5 \%$ solution of urea (molar mass $=60 \mathrm{~g} \mathrm{~mol}^{-}$ ${ }^{1}$ ) in the same solvent. If the densities of both the solutions are assumed to be equal to $1.0 \mathrm{~g}$ $\mathrm{cm}^{-3}$, molar mass of the substance will be

1 $90.0 \mathrm{~g} \mathrm{~mol}^{-1}$
2 $115.0 \mathrm{~g} \mathrm{~mol}^{-1}$
3 $105.0 \mathrm{~g} \mathrm{~mol}^{-1}$
4 $210.0 \mathrm{~g} \mathrm{~mol}^{-1}$
SOLUTIONS

277550 What is the amount of urea dissolved per litre if aqueous solution is isotonic with $10 \%$ cane sugar solution? (mol. wt. of urea $=60$ )

1 $200 \mathrm{~g} / \mathrm{L}$
2 $19.2 \mathrm{~g} / \mathrm{L}$
3 $17.54 \mathrm{~g} / \mathrm{L}$
4 $16.7 \mathrm{~g} / \mathrm{L}$
SOLUTIONS

277552 A solution containing $10 \mathrm{~g}$ per $\mathrm{dm}^{3}$ of urea $\left(\right.$ molecular mass $\left.=60 \mathrm{~g} \mathrm{~mol}^{-1}\right)$ is isotonic with a $5 \%$ solution of a non-volatile solute. The molecular mass of this non-volatile solute is

1 $200 \mathrm{~g} \mathrm{~mol}^{-1}$
2 $250 \mathrm{~g} \mathrm{~mol}^{-1}$
3 $300 \mathrm{~g} \mathrm{~mol}^{-1}$
4 $350 \mathrm{~g} \mathrm{~mol}^{-1}$
SOLUTIONS

277544 At $25^{\circ} \mathrm{C}$, at $5 \%$ aqueous solution of glucose (molecular weight $=180 \mathrm{~g} \mathrm{~mol}^{-1}$ ) is isotonic with a $\mathbf{2 \%}$ aqueous solution containing and unknown solute, What is the molecular weight of the unknown solute?

1 60
2 80
3 72
4 63
5 98
SOLUTIONS

277547 Which of the following make up an isotonic triad?

1 ${ }_{32}^{78} \mathrm{Ge},{ }_{33}^{77} \mathrm{As},{ }_{31}^{74} \mathrm{Ga}$
2 ${ }_{18}^{40} \mathrm{Ar},{ }_{19}^{40} \mathrm{~K},{ }_{20}^{40} \mathrm{Ca}$
3 ${ }_{92}^{233} \mathrm{U},{ }_{90}^{232} \mathrm{Th},{ }_{94} 239 \mathrm{Pu}$
4 ${ }_{6}^{13} \mathrm{C},{ }_{7}^{12} \mathrm{C},{ }_{7}^{14} \mathrm{~N}$
5 ${ }_{6}^{14} \mathrm{C},{ }_{8}^{16} \mathrm{O},{ }_{7}^{15} \mathrm{~N}$
SOLUTIONS

277548 A 5.25\% solution of a substance is isotonic with a $1.5 \%$ solution of urea (molar mass $=60 \mathrm{~g} \mathrm{~mol}^{-}$ ${ }^{1}$ ) in the same solvent. If the densities of both the solutions are assumed to be equal to $1.0 \mathrm{~g}$ $\mathrm{cm}^{-3}$, molar mass of the substance will be

1 $90.0 \mathrm{~g} \mathrm{~mol}^{-1}$
2 $115.0 \mathrm{~g} \mathrm{~mol}^{-1}$
3 $105.0 \mathrm{~g} \mathrm{~mol}^{-1}$
4 $210.0 \mathrm{~g} \mathrm{~mol}^{-1}$
SOLUTIONS

277550 What is the amount of urea dissolved per litre if aqueous solution is isotonic with $10 \%$ cane sugar solution? (mol. wt. of urea $=60$ )

1 $200 \mathrm{~g} / \mathrm{L}$
2 $19.2 \mathrm{~g} / \mathrm{L}$
3 $17.54 \mathrm{~g} / \mathrm{L}$
4 $16.7 \mathrm{~g} / \mathrm{L}$
SOLUTIONS

277552 A solution containing $10 \mathrm{~g}$ per $\mathrm{dm}^{3}$ of urea $\left(\right.$ molecular mass $\left.=60 \mathrm{~g} \mathrm{~mol}^{-1}\right)$ is isotonic with a $5 \%$ solution of a non-volatile solute. The molecular mass of this non-volatile solute is

1 $200 \mathrm{~g} \mathrm{~mol}^{-1}$
2 $250 \mathrm{~g} \mathrm{~mol}^{-1}$
3 $300 \mathrm{~g} \mathrm{~mol}^{-1}$
4 $350 \mathrm{~g} \mathrm{~mol}^{-1}$
SOLUTIONS

277544 At $25^{\circ} \mathrm{C}$, at $5 \%$ aqueous solution of glucose (molecular weight $=180 \mathrm{~g} \mathrm{~mol}^{-1}$ ) is isotonic with a $\mathbf{2 \%}$ aqueous solution containing and unknown solute, What is the molecular weight of the unknown solute?

1 60
2 80
3 72
4 63
5 98
SOLUTIONS

277547 Which of the following make up an isotonic triad?

1 ${ }_{32}^{78} \mathrm{Ge},{ }_{33}^{77} \mathrm{As},{ }_{31}^{74} \mathrm{Ga}$
2 ${ }_{18}^{40} \mathrm{Ar},{ }_{19}^{40} \mathrm{~K},{ }_{20}^{40} \mathrm{Ca}$
3 ${ }_{92}^{233} \mathrm{U},{ }_{90}^{232} \mathrm{Th},{ }_{94} 239 \mathrm{Pu}$
4 ${ }_{6}^{13} \mathrm{C},{ }_{7}^{12} \mathrm{C},{ }_{7}^{14} \mathrm{~N}$
5 ${ }_{6}^{14} \mathrm{C},{ }_{8}^{16} \mathrm{O},{ }_{7}^{15} \mathrm{~N}$
SOLUTIONS

277548 A 5.25\% solution of a substance is isotonic with a $1.5 \%$ solution of urea (molar mass $=60 \mathrm{~g} \mathrm{~mol}^{-}$ ${ }^{1}$ ) in the same solvent. If the densities of both the solutions are assumed to be equal to $1.0 \mathrm{~g}$ $\mathrm{cm}^{-3}$, molar mass of the substance will be

1 $90.0 \mathrm{~g} \mathrm{~mol}^{-1}$
2 $115.0 \mathrm{~g} \mathrm{~mol}^{-1}$
3 $105.0 \mathrm{~g} \mathrm{~mol}^{-1}$
4 $210.0 \mathrm{~g} \mathrm{~mol}^{-1}$
SOLUTIONS

277550 What is the amount of urea dissolved per litre if aqueous solution is isotonic with $10 \%$ cane sugar solution? (mol. wt. of urea $=60$ )

1 $200 \mathrm{~g} / \mathrm{L}$
2 $19.2 \mathrm{~g} / \mathrm{L}$
3 $17.54 \mathrm{~g} / \mathrm{L}$
4 $16.7 \mathrm{~g} / \mathrm{L}$
SOLUTIONS

277552 A solution containing $10 \mathrm{~g}$ per $\mathrm{dm}^{3}$ of urea $\left(\right.$ molecular mass $\left.=60 \mathrm{~g} \mathrm{~mol}^{-1}\right)$ is isotonic with a $5 \%$ solution of a non-volatile solute. The molecular mass of this non-volatile solute is

1 $200 \mathrm{~g} \mathrm{~mol}^{-1}$
2 $250 \mathrm{~g} \mathrm{~mol}^{-1}$
3 $300 \mathrm{~g} \mathrm{~mol}^{-1}$
4 $350 \mathrm{~g} \mathrm{~mol}^{-1}$