Ionic interactions are weaker in water than they are in an anhydrous medium. Describe how water reduces the strength of these interactions.
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Ionic interactions are weaker in water than they are in an anhydrous medium. Describe how water reduces the strength of these interactions.
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- The strength of ionic interactions is weaker in water than inan anhydrous medium. Explain how water weakens theseinteractions.Calculate the theoretical pH of a Tris buffer (pH 8.0) at 0 ºC. Assume that room temperature is 22 ºCStearic acid is insoluble in water, and sodium stearate (a soap) is soluble. What causes the difference in solubility? Explain.
- Compare the solubility of lead carbonate in each of the following aqueous solutions: Clear All 0.10 M Pb(NO3)2 More soluble than in pure water. 0.10 M K,CO, Similar solubility as in pure water. 0.10 M NH,NO3 Less soluble than in pure water. 0.10 M NACH3C00Guanosine (C10H13N5O5) in solution has a maximum absorbance at a wavelength of 275 nm. The molar extinction co-efficient at this wavelength is 84M−1cm−1and the path length is 24.7 cm. Through the use of a spectrophotometer, it is found that the that A275= 1.48. What is the concentration of the guanosine solution in grams/litre? Molecular weights (g/mol): C-12, H-1, N-14, O-16 Select one: A. 0.201869 g/L B. 0.435188 g/L C. 0.059919 g/L D. 0.294046 g/L E. 0.000713 g/LExplain the difference in the melting points of the linoleic acid and linolenic acid:
- How much of the enzyme proteinase k (solute) is required to make 250ml of a solution with a concentration of .01mg/ml? (Weight/volume ratio)When 2.43 g of a nonelectrolyte solute is dissolved in water to make 435 mL of solution at 25 °C, the solution exerts an osmotic pressure of 895 torr. What is the molar concentration of the solution? concentration: 0.045 M Incorrect How many moles of solute are in the solution? moles of solute: 0.034 mol Incorrect What is the molar mass of the solute? molar mass: 69.12 g/mol IncorrectAn aqueous solution contains 0.34 M potassium cyanide. One liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) 0.34 mol HCI04 0.16 mol NaOH 0.33 mol KCIO4 0.16 mol HCIO4 0.33 mol HCN
- Compare the solubility of lead carbonate in each of the following aqueous solutions: Clear All 0.10 M Pb(CH3C00)2 More soluble than in pure water. 0.10 M (NH4)2CO3 Similar solubility as in pure water. 0.10 Μ KNΟS Less soluble than in pure water. 0.10 Μ ΝΗCH, COOHow much water must be added to 300 mL of an aqueous solution of 0.2 M acetic acid in order to double the degree of ionization? Take the acid ionization constant of acetic acid to be 1.8 x 10-5.Consider the following pH titration curve of a diprotic acid. What is the approximate values for pka 1 and pka 2? the curve is attached below.