A student is carrying out a biological preparation that requires 1M NaCl to maintain an ionic strength of 1.0. The student chooses to use 1.0 M ammonium sulfate instead. Why is this a seri- ous error?

Q: (12) Calculate the pK, of dichloroacetate. Formulate the base association equilibrium for…

A: For the aqueous solution, we know that the product of the acid dissociation constant and the base…

Q: Ascorbic acid, H₂C6H₂O6, isa diprotic acid usually known as vitamin C. For this acid, pkai is 4.10…

A: Answer:Ascorbic acid is the weak acid and it dissociates partially in its solution, therefore an…

Q: 2. Complete the following table: pH 1.241 00 HI QZC4 100 mM anthoxanthin GB1 Ubiquitin -1.255 7.399…

A: pH of solution is given by the formula   ..........(1) pH < 7 solution is acidicpH > 7…

Q: Complete the following three tasks below. a. Find the approximate pKa value for each compound in the…

A: The ionic compound shows good interaction with water and hence is water soluble. The non-ionic…

Q: Following the calculation attached, what would be the new pH after the addition of another 1000 µL…

A: Given the initial moles of glycine hydrochliride = 0.002 mol According to the given image, initially…

Q: (0) PMBO. OH 3. PCC, CH₂Cl₂2 1. TBSOTf, 2,6-lutidine, CH₂Cl2₂ CO₂Me 2. DDQ, pH 7 buffer, CH₂C₂

A: Alcohols is protected by using protecting group like Tert-Butyldimethylsilyl…

Q: 1. The structure for ibuprofen is shown below. A) Circle the most acidic proton on the molecule. B)…

A:

Q: the binding constant and the free energy of binding

A: The binding constant for a receptor R and a ligand L is defined as Kbinding=[RL][R]×[L] for the…

Q: Why is an aqueous cream and procaine solution unstable and subject to cracking

A:

Q: True or false and why is false 8   Structures produced by X-ray diffraction are as good as the…

A:

Q: Explain why different results are observed when HCl and H2SO4 are added to brine?

A: The different results are observed when HCl and H2SO4 are added to brine because in HCl, due to…

Q: If the pH is 2, what is the %HA at of a molecule has a pKa = 4? Report the answer to one dpcimal…

A: Given : pH of solution = 2  And pKa of acid = 4. The partial dissociation reaction of HA can be…

Q: (a) Please write the conjugate bases of the following acids. (1) CH3COOH - CH3CO0 (Ka = 1.76 x 10-5)…

A: Required information from previous parts: From part-(c), the desired ration of conjugate base to…

Q: (10-3 Triprotic systems) Find the pH of (A) 0.10 M H3His2+; (B) 0.10 M H2His+ ; (C) 0.10 M HHis;

A:

Q: (e) An acidic buffer solution is formed by mixing 50 mmol dm formic acid (HCOOH) with 0.8 mol dm³ of…

A:

Q: At pH=7.79, what is the ratio of H3PO4 to H₂PO4 (pK₂=2.1).

A: Given data is  pH = 7.79  pKa = 2.1  pH is equal to the sum of the pKa value and the log of the…

Q: Complete the ?sp expression for Ag2CO3 Ksp=8.46×10−12

A: Solubility product of a salt () at a given temperature may be defined a s the product of molar…

Q: I was just wondering how you got the 4.0 x 10-4 for the acidionzation constant.

A: Given for the 0.500 M HNO2  HNO2 = nitrous acid  It dissociates into H+ ion and NO2- ion .

Q: 2. Joey was tasked to ensure that an enzyme responsible for keeping his species from extinction…

A:

Q: 17. As shown below, the amino acid histidine can exist in 4 different protonation states depending…

A:

Q: 4. Here are the pKa values for Question 2. Did you get the answer correct in which direction the…

A: Given :  pKa of H2O = 15.7  pKa of NH4+ = 9.8  pKa of NH3 = 33  Since pKa = -log Ka so higher is the…

Q: b. You have 100 mLs of a 2 M histidine solution at pH 6.0, how many ml.s of a 5 M KOH solution must…

A: Histidine(His) is an amino acid with a side group(=NH+) whose pKa = 6.0  Since the initial pH = pKa,…

Q: Complete the Ka2 expression for H₂CO3 in an aqueous solution. Ka2 = 4.69 x 10-11 =

A:

Q: (True or False): Fluorescence spectroscopy can be used to determine the ratios of Hg isotopes in a…

A: In the given questions, we have to choose correct option related to spectroscopy.

Q: 200 180 160 140 120 100 40 20 PPM O (CDCL3)

A:

Q: Calculate the pH of two HCl solution based on their concentrations of 0.001 and 0.0001 M. Then…

A: #Part-1: HCl is a strong monoprotic acid.  Since HCl is a strong monoprotic acid, it is completely…