calculate the amount of solvent needed to prepare 50g of 10% solution of tincture iodine. Name the solvent.
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Given:
Mass Percent of iodine = 10 %
Mass of solution, W = 50 gm
To Find:
The amount of solvent needed to prepare the given solution.
Calculation:
- Tincture of iodine is the solution of iodine in a mixture of ethanol and water. It is used as a tincture of iodine.
- Mass percent is given as:
w/w % = (w/W) × 100
⇒ 10 = (w/50) × 100
⇒ w = 5 gm
⇒ Amount of solvent = W - w = 50 - 5 = 45 gm
- So, the amount of solvent, i.e., Ethanol and Water, is 45 grams.
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