The protein insulin has an isoelectric point of pI = 5.40. This is the pH at which the number of positive charges on the protein surface equals the number of negative charges on the protein surface. At which of the following solution pH values will insulin be in solution and at which will it tend to aggregate? pH = 1.44 pH = 5.30 pH = 8.13 Clear All The protein will be in solution. The protein will tend to aggregate.

write out the equilibrium expression for the solvation of Ag2CrO4 in water  please explain step by step

According to Henry’s law the atmospheric partial pressure of CO2 dictates the concentration of aqueous CO2 according to the following equilibrium expression where k is the Henry’s law constant for CO2.  CO2 (g) <-> CO2 (aq)  k=1x10^-1.5  The acid dissociation constant Ka for carbonic acid applies to CO2 (aq). Given pKa1=6.35 and pKa2=10.33 and the fact that the partial pressure of CO2 in the atmosphere is 10^-3.5 atm, find the pH of water in equilibrium with the atmosphere.

What is the symbolic expression for the equillibrium constant for the reaction:  2C2H6(g) + 7 O2(g) = 4CO2(g)+6H2O(g)?

Calculate AG° for H20(g) + 02(g) = H2O2 (g) at 595 K, using the following data: H2 (9) + O2 (9) = H2O2(g) K = 3.7 x 1037 at 595 K 2H2 (9) + O2 (9) = 2H2O(g) K = 2.6 × 10® at 595 K AG kJ/mol

Write the equilibrium constant expression (Kc) for the reaction below   2P2O5(g) + 10Cl2(g)  ⇌  4PCl5(aq) + 5O2(g)

What is the freezing point of a 0.400 m solution of sucrose in ethanol? The freezing point depression constant forethanol is 1.99oC/m and the freezing point of ethanol is -114.1oC.

Type your answer... 20 Consider the reaction: N2(g) + 3H2 (g)2NH3 (g) AG°F (NH3) = -17.65kJ/mol Determine the equilibrium constant for this reaction at 298.15K. (Hint: Check the stoichiometry of the reaction when you use the Gibbs energy of formation) %3D Report your answer as a whole number (no places past the decimal point). Do not use scientific notation. Type your answer...

Arrange the following bases in increasing base strength. There Strongest base Methylamine (CH3NH2), K, = 4.4 x 104 I Pyridine (C5H5N), K 1.7x 109 Aniline (C,H5NH2), K = 3.9 x 10 10 Dimethylamine (CH3)2NH), Kp = 5.1x 104 | Hydrazine (N2H4), Kg = 1.3 x 106 Weakest base 1. 2) 3. 4) 5.

Coral structures found in the Great Barrier Reef are composed of calcium carbonate, CaCO3, and are under threat of dissolution due to ocean acidification. Consider the following equilibrium reaction equation. CaCO3(s) + CO2(aq) + H2O(l) ⇌ Ca2+(aq) + 2HCO3–(aq) Write the expression for the equilibrium constant, Kc for this reaction. Predict whether the pH of the ocean will increase or decrease as a result of a decrease in the partial pressure of carbon dioxide in the atmosphere (circle your answer).       Calculate the molar solubility (s) of calcium carbonate in water at 25 °C when    Ksp = 4.5 ´ 10–9.