Calculate the pH for a mixture of 0.5 mole of benzoic acid and one mole of sodium benzoate. The pK, of benzoic acid is 4.2.

Q: A solution is made by dissolving 9.5 g of sucrose, C12H22O11 (molar mass 342.3 g mol-1) in water to…

A: Molarity of the solution is defined as the mole of solute, which is dissolved in the per (L) liter…

Q: Calculate the pH of a buffer that contains 0.75 M acetic acid and 0.35 M acetate ion in 1 L…

A: The objective of this question is to calculate the pH of a buffer solution before and after the…

Q: The enzyme urease is widely used for determining urea concentration in blood. The Michaelis constant…

A: Given Values: Km=2 mMk2=2.8×104 s-1V=3.49 M/secET=0.34 mM = 0.34×10-3 M

Q: For in the solution part for c), do you mean 6.25%?

A: Alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: 22. If 75 mls of 0.02 M HCI is added to 425 mls of 0.5 M glycine buffer at pH 10.4, what is the…

A: Here given that, there is 425 mL of 0.5M glycine buffer at pH 10.4425 mL is equal to 0.425 L…

Q: You have a 0.5M stock solution of NaCl (formula weight: 58.4 g/mole), a 0.15M stock solution of…

A: Introduction   The standard concentration of the solution is usually determined in "M", which is…

Q: A 0.025 M solution of an unknown organic acid has a pH of 5.70. 1.1 By means of a full calculation,…

A: The Henderson-Hasselbalch equation of a general buffer system; HA↔H+ + A- where 'HA' is the acid and…

Q: Determine the pH for the following solutions.  {H3O+}=2.4x10^-2 M

A: p in pH denotes negative of the logarithm(-log). So pH is negative logarithm of molarity of H pH…

Q: Draw an approximate titration curve of glycine. Label the approximate isoelectric point of the…

A: A titration curve is a graphical representation of the pH of a solution as a function of the volume…

Q: 439 mL of 0.270 M hydrochloric acid is exactly neutralized with 0.920 M potassium hydroxide…

A: Given Values: Volume of HCl = 439 ml The concentration of HCl = 0.270 M Concentration of NaOH =…

Q: What is the isoelectric point of HPY? 5.70 6.15 6.875 7.60 8.05

A: Isoelectric point (pI) is the pH at which a species (here a tripeptide) have 0 charge (i.e.…

Q: What volume of 0.1M NaOH (reagent) needs to be added to increase your 7.5 pH (buffer) by 0.5 pH…

A: The buffer is a species which resist any change in pH on adding small amounts of an acid or base in…

Q: The following data was collected for n-pentane and isopentane: Compound P, (kPa) n-pentane 282.9 at…

A: Multiple subparts are asked . I will answer the firt 3 subprts, as per guidelines. P1 = 955.9 kPa P2…

Q: O E A D a) purine, RNA O c) purine, DNA b) pyrimidine, RNA HC CH₂ d) pyrimidine, DNA CH CH-CH | →OH…

A: DNA aur RNA is a polymer of nucleotides. DNA is made up of deoxyribose sugar, a phosphate group and…

Q: Calculate the number of grams needed to prepare 100 mL of a 0.20 M solution of cobalt sulfate…

A: 1 mole of a substance is equal to that substance's Molecular weight The molecular weight is cobalt…

Q: 50X TBE is 87 mM Tris-borate and 4 mM EDTA at pH 8.3. What is the molarity of each of the chemicals…

A: Given In 50X TBE  87 mM tris-borate  4 mM EDTA pH 8.3

Q: It is recommended that children should have fluoride supple- ments for their teeth if the fluoride…

A: To convert parts per million (ppm) to micrograms per liter (µg/L), we need to know the molar mass of…

Q: What is the pH of a solution of 4.1 x 10-8 M NaOH in otherwise pure water?

A: The objective of this question is to calculate the pH of a solution of sodium hydroxide (NaOH) in…

Q: Convert the following pH values in both [H+] and [OH-] values. (6 points) 1. pH  =  3.95…

A: According to the definition of pH, pH = -log [H+]. According to the definition of pOH, pOH = -log…

Q: 9. 1.4 g of glucose (C6H1206) is dissolved in 150 ml of water (final volume). What is the final…

A: Molarity can be calculated as : M = n/V where, M is the molality of the solution that is to be…

Q: Consider a mixture of two proteins with molecular weights of 20,000 and 200,000. For simplicity of…

A: Sedimentation Coefficient is the rate per unit centrifugal field experienced by the particle…

Q: sample of adenosine triphosphate (AI nm) is placed cuvette with sufficient buffer to give a total…

A:

Q: Calculate acetic acid when it requires 44.82mL of a 0.145M NaOH solution to titrate 34.95 mL of our…

A: M1VI=M2V2

Q: A very weak acid has à Ka= 4.37 x M? (-) What is the [H+] of a solution of this acid that is 2.65

A: The acids are substances that can readily donate a proton. Bases are molecules that receive a…