Which is NOT an appropriate factor in choosing solvents in a mixed solvent system? a. The two solvents must be inert. b. The two solvents must be immiscible. c. The solute must have varying solubility between the two solvents d. The solute must not react with the solvents
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- Explain why this experiment would or would not work if you used polar water as a solvent instead of alcohol, which is non-polar? (Hint: remember that “like dissolves like”)Molarity is the ratio between: Select one: a. the number of moles of a solute and the volume of a solution b. the mass of a solute and the mass of a solution c. the volume of a solute and the volume of a solution. d. the number of moles of a solute and the mass of a solventWhat is the definition of solute concentration? A. The total amount of solute inside a cell B. The total amount of solution inside and outside a cell C. The total amount of solvent in a solution D. The total amount of solute dissolved in a solvent
- Which would be an overall explanation for how a buffer works? O The conjugate base ions in the buffer solution resists changes in pH by reacting with any hydroxide ions added to the buffer solution O None of the choices The undissociated acid molecules in the buffer solution resists changes in pH by reacting with any acid H+ ions added to the buffer solution O The mixture of ions and molecules in a buffer solution resists changes in pH by reacting with any hydrogen ions or hydroxide ions added to the buffer solutionUsing an example of your choice of buffer, explain how a buffer absorbs added acids and bases. Use the formula of the conjugate acid/base of the buffer in your explanation.Explain why vegetable oil and water don't dissolve in one another.
- Ionic interactions are weaker in water than they are in an anhydrous medium. Describe how water reduces the strength of these interactions.Bubbles of CO2 are formed during the reaction between vinegar, water and Alka Seltzer. Provide an argument for why the CO2 molecules do not remain in the solution.What is true about lipids? A. They are polar and therefore soluble in polar solvents B They are polar and therefore soluble in nonpolar solvents C. They are nonpolar solvents D. They are nonpolar and therefore soluble in polar solvents
- Laundry detergent molecules have a short polar end and a long nonpolar end, enabling them to bind to water (on the polar end) and oils (on the nonpolar end). Suppose you spill some salad dressing on your shirt. Explain how washing your shirt with detergent will help remove the dressing.Using an example compound, describe the role of buffers in regulating pH.A solution that conducts electricity must contain Select one: a. Hydrophobic molecules b. Polar molecules c. Ions