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Chloride samples are prepared for analysis by using NaCl,KCl and NH4Cl separately or as a mixture.What minimum volume of 5% by weight AgNO3 solution(specific gravity=1.04) must be added to a sample of 0.3 g in order to ensure complete precipitation of chloride in every possible case?
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Chloride samples are prepared for analysis by using NaCl,KCl and NH4Cl...
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Chloride samples are prepared for analysis by using NaCl,KCl and NH4Cl...

Calculating Minimum Volume of AgNO3 Solution

- First, calculate the moles of chloride in the sample:
- NaCl: 0.3g / 58.44g/mol = 0.0051 mol
- KCl: 0.3g / 74.55g/mol = 0.0040 mol
- NH4Cl: 0.3g / 53.49g/mol = 0.0056 mol

- The maximum number of moles of Ag+ ions needed is the sum of moles of chloride ions:
- Total moles of chloride = 0.0051 + 0.0040 + 0.0056 = 0.0147 mol

- Calculate the mass of AgNO3 needed:
- Moles of AgNO3 = 0.0147 mol
- Mass of AgNO3 = moles x molar mass = 0.0147 mol x (107.87 + 14.01 + 3(16.00)) g/mol = 1.03 g

- Determine the volume of 5% AgNO3 solution required:
- Density = 1.04 g/cm3 = 1.04 g/mL
- Volume = Mass / Density = 1.03 g / 1.04 g/mL = 0.99 mL

Therefore, a minimum volume of 0.99 mL of 5% AgNO3 solution is needed to ensure complete precipitation of chloride in every possible case.
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Chloride samples are prepared for analysis by using NaCl,KCl and NH4Cl separately or as a mixture.What minimum volume of 5% by weight AgNO3 solution(specific gravity=1.04) must be added to a sample of 0.3 g in order to ensure complete precipitation of chloride in every possible case?
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