Can this be done in 2 hours? | Chemistry homework help
3. Dilutions
a. Describe how you would prepare 1.0 L of a 0.10 M solution of sulfuric acid from a 3.0 M solution of sulfuric acid. Answer: Calculate the volume of 3.0 M sulfuric acid needed to prepare the dilution. Mreagent × Vreagent = Mdilution × Vdilution 3.0 M × Vreagent = 0.10 M × 1.0 L Vreagent = 0.033 L = 33 mL Slowly add 33 mL of 3.0 M sulfuric acid to a 1000-mL volumetric flask half filled with distilled or deionized water and swirl the flask to mix. Once the solution is at room temperature, dilute to the mark with water and then invert the flask several times to mix. b. Describe how you would prepare 500 mL of a 0.25 M solution of sodium hydroxide from a 5.0 M solution of sodium hydroxide. Answer: Calculate the volume of 5.0 M sodium hydroxide needed to prepare the dilution. Mreagent × Vreagent = Mdilution × Vdilution 5.0 M × Vreagent = 0.25 M × 0.500 L Vreagent = 0.025 L = 25 mL Slowly add 25 mL of 5.0 M sodium hydroxide to a 500-mL volumetric flask half-filled with distilled or deionized water and swirl the flask to mix. Once the solution is at room temperature, dilute to the mark with water and then invert the flask several times to mix.