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  • what is the molarity of a solution of HCl which contains 49% by weight of solute and whose specific gravity is 1.41

what is the molarity of a solution of HCl which contains 49% by weight of solute and whose specific gravity is 1.41

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\\\text{weight of HCl in 1ml of solution }$=$ \text{ specific gravity} \times 49 \%$ $ \\ =1.41 \times 49 / 100$ \\ $=.6909 \mathrm{g} / \mathrm{m}$ \\ Weight of $\mathrm{HCl}$ in $1000 \mathrm{ml}$ of solution $=0.6909 \times 1000=690.9 \mathrm{g}$\\ Molarity = weight of HCl in $1000 \mathrm{ml} /$ mol.weight of $\mathrm{HCl}$ $ \\ =690.9 / 36.4$ \\ $=18.9 \mathrm{M}$

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