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40 Solution solubility and concentrations

Last updated almost 5 years ago

9 Nsɛmmisa

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Calculate the molarity of each of the following solutions.

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Now for preparing solutions - Calculate the number of grams of solute needed to prepare each of the following solutions.

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1.

What mass of KCl will produce a saturated solution in 500.0 g of water at 20°C? The solubility of KCl at 20°C is 34.0 g/100 g H2O.

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2.

A saturated solution of silver nitrate is prepared in 100.0 g of water at 20°C. The solution is then heated to 50.0°C. How much more silver nitrate must now be added to obtain a saturated solution? (Use Table 16.1.)

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3.

0.40 mol of NaCl dissolved in 1.6 L of solution

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4.

20.2 g of potassium nitrate, KNO3, in enough water to make 250.0 mL of solution

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5.

What is the molarity of a solution that contains 212.5 g of sodium nitrate (NaNO3) in 3.0 liters of solution?

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6.

2500.0 mL of a 3.0M solution of potassium hydroxide, KOH

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2.0 liters of 2.0M nitric acid, HNO3, solution

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You must prepare 300.0 mL of 0.750M NaBr solution using 2.00M NaBr stock solution. How many milliliters of stock solution should you use?

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9.

What is the concentration in percent by volume, %(v/v), of 60.0 mL of methanol in a total volume of 500.0 mL?