Question

1. If the solubility of sodium chloride (NaCl) is 30.6 g/100 mL of H₂O at a given temperature, how many grams of NaCl can be dissolved in 250.0 mL of H₂O?

2. If the solubility of glucose (C₆H₁₂O₆) is 120.3 g/100 mL of H₂O at a given temperature, how many grams of C₆H₁₂O₆ can be dissolved in 75.0 mL of H₂O?

3. Only 0.203 mL of C₆H₆ will dissolve in 100.000 mL of H₂O. Assuming that the volumes are additive, find the volume/volume percent of a saturated solution of benzene in water

4. Only 35 mL of aniline (C₆H₅NH₂) will dissolve in 1,000 mL of H₂O. Assuming that the volumes are additive, find the volume/volume percent of a saturated solution of aniline in water.

5. A solution of ethyl alcohol (C₂H₅OH) in water has a concentration of 20.56% v/v. What volume of C₂H₅OH is present in 255 mL of solution?

6. What mass of KCl is present in 475 mL of a 1.09% m/v aqueous solution?

7. What is the molarity of 0.500 L of a potassium chromate solution containing 0.0650 mol of K₂CrO₄?

8. What is the molarity of 4.50 L of a solution containing 0.206 mol of urea [(NH₂)₂CO]?

9. What is the molarity of a 2.66 L aqueous solution containing 56.9 g of NaBr?

10. If 3.08 g of Ca(OH)₂ is dissolved in enough water to make 0.875 L of solution, what is the molarity of the Ca(OH)₂?

11. What mass of HCl is present in 825 mL of a 1.25 M solution?

12. What mass of isopropyl alcohol (C₃H₈O) is dissolved in 2.050 L of a 4.45 M aqueous C₃H₈O solution?

13. What volume of 0.345 M NaCl solution is needed to obtain 10.0 g of NaCl?

14. How many milliliters of a 0.0015 M cocaine hydrochloride (C₁₇H₂₂ClNO₄) solution is needed to obtain 0.010 g of the solute?

19.. A solution having initial concentration of 0.445 M and initial volume of 45.0 mL is diluted to 100.0 mL. What is its final concentration?

20. A 50.0 mL sample of saltwater that is 3.0% m/v is diluted to 950 mL. What is its final mass/volume percent?

Answer 1

please post other questions separately

I dubility = 30.6g/100 ml il 100 ml of water will dissolve 30.69 Nall ť 250 ml of water will dissolve 30.6g x 250 ml = 76.59 100 mL of Nale 2 / Lubility = 120.39/400 mL le toomd of water will dissolve 120.37 of Glycoje ::: 750 mL of water will dissolve 120.34 x 75.0 m2 390.29 of Glucose - 100ml 3 Solubility = 0.203 ml / 100 ml of water Lü l olo Volume of Benzene x Looil. = 6.203 mlX 100% - Volume of solution_ - (400+0.203 mL) = 0.203 md X1001 0.2026% à 0:203:12 - 100.203 mL 14 solubility : _ 35m2(Aniline) / 1000 ml of water 8 v/v lo= Volume of Aniline x 100% Voume of solution 35 me x 100% (1000 ml + 35ml) 3.38%