Question 4 What is the pH of the buffer that is composed of 0.10 M Na2HPO4 and 0.15 M KH2PO4? (Ka1=7.5 x 10-³, Ка2-6.20 х 10-8, Каз-4.8 х 10-13) O pH = 7.03 O pH 12.14 O pH = 7.21 O pH = 7.39

Q: density

A:

Q: Consider the reaction in the box. Which of the following is a key intermediate in the mechanism of t...

A: Name of CH3CH2OH is ethanol that contains an alcohol functional group.  The given reactant  has a he...

Q: What should you know about household cleaning products?

A:

Q: Give the iupac names of the following:

A:

Q: concentration

A: According to the question, the concentration of ascorbic acid is ~0.001 M in lemon juice, We need to...

Q: What is the percent by volume concentration of 11.6 mL of a hydrogen peroxide in 352 mL of a hydroge...

A: Given, Volume of the hydrogen peroxide = 11.6 mL Volume of the the hydrogen peroxide-water solution ...

Q: A student needs to prepare a buffer solution with a pH of 4.18. Assuming a pKa of 4.69, how many mL ...

A:

Q: OH HỌ Но. он OH но но но но но Он Which is the correct IUPAC name of the structure given? O a-D-gluc...

A: This question belongs to IUPAC nomenclature of organic compound. Here , there are combination of thr...

Q: Use the method of half-reactions to balance the following redox equation in basic solution:  Al(s) ...

A:

Q: Convert your answer to scientific notation (i.e. ## x 10x mg) = Convert a 3.5% NaCl solution to µg/...

A: Given: Concentration of NaCl in %(m/v) = 3.5 %.  

Q: Which is the is the correct structure for a-D-galactopyranose? OH OH HO HO O HOCH2 0. OH OH OH OH OH...

A: α-D-galactose is d-Galactopyranose having alpha-configuration at the anomeric centre. It has a role ...

Q: Complete each reaction scheme below with the starting material required to give the product shown as...

A: Three membered rings formed by two carbon and one oxygen atom is known as epoxide ring. The heterocy...

Q: Molecule ЕPG Hyb (circle if polar) 2D Lewis Structure 3D Lewis Structure MG ВА AsCl5 03

A: Solution  Given the molecule  AsCl5  and  O3 Find the 2D and 3D Lewis structure and  MG, BA, Hybridi...

Q: Question 6 Calculate the pH of 0.40 M NH3 solution, Kb = 1.8 x 10 M. pH = 11.6 pH = 11.8 pH = 11.2 p...

A: Concentration of NH3 = 0.40 M  Kb = 1.8 × 10-5 M  pH of NH3 solution = ?   

Q: A yogurt mix is heated in a stainless-steel kettle by steam at 100°C with 90% quality. Steam condens...

A: It involves two stages .  1) conversion of staem to water  2) then water at 100°C to 80°C  Heat ener...

Q: concentration of OH

A:

Q: Synthesize a triglyceride with the fatty acids described below bonded to a glycerol molecule. We wae...

A:

Q: Determine in descending order which carbohydrate is most polar to least polar. Explain your answer. ...

A:

Q: Which of these is NOT a component of a three-electrode cell? constant electrode O working electrode ...

A: In the given question, we need to tell about the components of a three electrode cell. So among the ...

Q: 2. Which compound (C12H22011 or NH,CI )contains the most total number of atoms?

A:

Q: Which of the below do you think would have the highest boiling point? Why? a. butane b. butanal C. 2...

A: There are various type of intermolecular forces of attraction between molecules such as vander waal ...

Q: Ph CH3 Ph-P= CHs Ph A B G) AICI3 (Give both products)

A:

Q: For a spherical cell, as the surface area increases, the volume increases: not at all. at the same r...

A:

Q: What are the IUPAC names of the following?

A:

Q: Part B: Draw the structures for the following names: 4-cyclopropyl-2-methyl-3-nitrohept-6-yne-1-ol 4...

A: Since you have posted a  question with sub-parts , we are entitled to answer the first three sub-par...

Q: e redox reaction, us

A:

Q: When solid BaF, is added to pure water at 25 ° C, the salt dissolves until the concentration of Ba2+...

A: The dissociation of BaF2 is ,                        BaF2s↔Ba2+aq + 2F-aq The solubility of Ba2+ is ...

Q: covalent bonds

A:

Q: Bromohydrin 1 can be prepared from the alkene shown below by reaction with Br2 and H20 as shown belo...

A:

Q: Write the electron configurations for the elements below. Use the following format with spaces betwe...

A: Electronic configuration is the distribution of electrons in an atom or molecule.

Q: A certain reaction has an activation energy of 58.70 kJ/mol. At what Kelvin temperature will the rea...

A:

Q: What is the molality of the soluton when a 27g of Sucrose (C6H12O6) is dissolved in 320g of water.

A:

Q: solution is prepared by dissolving 40.00 g of NaCl (f.w. = 58.44 g mol–1), a non-volatile solute, in...

A:

Q: write a balanced chemical equation

A:   Chemical reactions can write in equation form , left side reactants and right side products and b...

Q: 4. 100 kmoles of Heptane is burned with 40% excess air. Seventy percent reacts to form CO2 and the r...

A: We are given 100 k/moles of Heptane is burned with 40% excess air. Seventy percent reacts to form CO...

Q: Explain the two elementary steps, coordination and heterolysis. Provide an acid/base reaction that i...

A:

Q: Calculate the standard potential of the cell Ag(s)|AgNO3(aq)||Cu(NO3)2(aq)|Cu(s) and the standard Gi...

A:

Q: mass

A:

Q: Consider the reaction data.   A⟶products ?  (?) ?  (?−1) 325 0.391 575 0.735 What two points shoul...

A:

Q: reaction occurs

A:

Q: Quiz 1 Free Response Propose a synthesis of the target molecule below. You must show every intermedi...

A: Oxidation of primary alcohol gives aldehyde with mild oxidizing agent like PCC and PDC while with st...

Q: Acrylic acid, whose formula is HC3H3O2 or HO2CCH=CH2 , is used in the manufacture of plastics. A 0.6...

A:

Q: The IR spectrum of the organic compound is given. Assign peaks to functional groups whenever possibl...

A: We have to assign the functional group of an organic compound from the given IR spectrum.

Q: Some chemical reactants are listed in the table below. Complete the table by filling in the oxidatio...

A: I have given the solution for the question below. There is no specific highlight so all the Oxidatio...

Q: 3. Calculate the volume of each solution, in liters. C. a 0.4 M solution containing 290 g of aluminu...

A:

Q: At a certain temperature the vapor pressure of pure acetyl bromide (CH,COB1) is measured to be 458. ...

A:

Q: Based on the results obtained in the following table, which indicator has approximately a pka of 4?

A: The indicators are chemical compounds that show changes in color at a definite change in pH. Hence, ...

Q: Calculate the fluid intake in milliliters (mL) for the following lunch. (Assume a glass holds 8 oz.)...

A: 1 glass = 8 Oz  1 Oz = 29.57 mL

Q: 3. Calculate the net energy of a Na* and Chion pair separated 1.275 nm apart, if the net force of th...

A: Here we have to determine the net energy of Na+ and Cl- ion pair separated by distance of 1.275nm an...

Q: Table 2: Balloon Circumference vs. Temperature Balloon Circumference Balloon Circumference Balloon T...

A:

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.