A student is preparing a buffer at a pH of 8.60. She has these chemicals in the lab: HCl, KOH, H3PO4, KH2PO4, K2HPO4, and K3PO4. Which two chemicals should she use? For H3PO4, pKa1=2.15, pKa2=7.20, pKa3=12.38

Q: Calculate the molar mass of a gas at 458. torr and 99.0 °C if 206, ng occupies 0.206 μl.. Be sure…

A: The question is based on the concept of ideal gas equation.We need to calculate molecular mass of…

Q: A sample of 3.58 grams of potassium nitrate is weighed out on a balance and prepared to a volume of…

A: Pottasium nitrate formula KNO3Mass of pottasium nitrate (w)= 3.58 gmVolume of water (V) = 2.50 ×102…

Q: se a synthesis of the following compound from benzene. You may use any necessary reagents you need.…

A: Given is electrophilic aromatic substitution reactions.Note: According to Q&A guidelines of…

Q: The volume of water needed to dissolve 0.0530 grams of silver hydroxide is Assume no volume change…

A: Given ,mass of silver hydroxide = 0.0530 gObjective :Calculate mass of water needed to dissolve…

Q: 7.64 In each of the following cases, draw the structure of an alkyl halide that will undergo an E2…

A: E2 reaction is biomolecular elimination reaction.This is single step reaction.Primary and secondary…

Q: How many moles of potassium hydroxide would have to be added to 150 mL of a 0.469 M hypochlorous…

A: Answer:Buffer solution is a type of solution that resists the change in its pH on adding small…

Q: The air pollutant NO is produced in automobile engines from the high-temperature reaction…

A:

Q: Question 4 o-Phthalic acid produces what acid derivative upon heating? an acid chloride an amide an…

A:

Q: (a) In a chemical reaction an explosion occurs. Would you expect AS to be positive, negative, or…

A: In thermodynamics entropy is a state function, comes from the second law of thermodynamics. To…

Q: The H3O of a solution with pH=2 is

A: The pH of the solution = 2The concentration of  = ?

Q: Bu Li Bu

A:

Q: Provide an efficient stereoselective synthesis for the following molecules: (1) Me -Me

A: Given is organic compound.To find out how this compound made, let's perform retrosynthetic analysis…

Q: Draw the structure of the major organic product(s) of the reaction. CH3 of 1. LIAIH4, ether 2. H₂O •…

A: Lithium aluminum hydride (LiAlH4) is a versatile reducing reagent, that reduces an amide into an…

Q: Classify each of the molecules below. X NH₂ primary amide secondary amide tertiary amide not an…

A: Amides are organic compounds containing the group —C(O)NH2 are classified according to the number of…

Q: Classify the following redox reaction: 2H₂O₂ 2H₂O + O₂ Select the single best answer. O…

A: Information of question

Q: Question 10 Which of the following sets of quantum numbers is not allowed? [A] n = 3, /= 1, m/ = -1,…

A:

Q: Automotive air bags inflate when sodium azide, NaN3, rapidly decomposes to its component elements.…

A:

Q: Aqueous solutions of barium chloride and silver nitrate are mixed to form solid silver chloride a…

A: The reaction between aqueous solutions of barium chloride (BaCl₂) and silver nitrate (AgNO₃) is a…

Q: with the formula C7H120 shows the following spectroscopic data. Deduce the structure of the entify…

A: The given molecular formula is: C7H12OThe unsaturation or Double bond equivalence is given by:This…

Q: Provide the correct systematic name for the compound shown here. ОН

A: The IUPAC nomenclature rules for the cycloalkane: Identify the longest continuous carbon…

Q: We don't see the answer written with a photo or pen, give the answer using the tool

A: Enantiomer are pair of stereoisomers which have non-super imposable mirror image of each other.…

Q: What elementary step is represent by the curved arrows shown below? 00 0=< + RH Proton Transfer…

A: Answer:Any specie that accepts the proton (H+ ion) in its solution is called as Bronsted-Lowry base…

Q: Assign oxidation numbers to all elements in the following compound and ion: (a) Pl3 P 1 (b) MnO4 Mn…

A: In neutral compound sum of oxidation number of all the atoms equal to zero. In case of ions , sum of…

Q: How many grams of AlCl3 are required to make 55.5 mL of a 3.6 M AlCl3 solution? Give your answer…

A: The volume of AlCl3 solution is 55.5 mL.The molarity of AlCl3 solution is 3.6 M.To find the grams of…

Q: Part A Draw the product formed when the structure shown below undergoes a substitution with NaOCH3…

A: The question is based on organic reactions. We need to identify the product and explain its…

Q: Balance the following redox reaction in basic solution. 2+ Cr(OH)3(s) + Cu²+ (aq) → Cro (aq) +…

A: Redox Reaction: A redox reaction is one type of chemical reaction in which oxidation and reduction…

Q: At 500 K, the equilibrium constant for the dissociation reaction H2(g)⇌2H(g) is very small…

A: Answer:1 mole of any substance always contains  particles in it and this value  is equal to Avogadro…

Q: Each of the insoluble salts below are put into 0.10 M hydrochloric acid solution. Do you expect…

A: Hydrochloric acid (HCl) is a strong acid that dissociates completely in the aqueous solution as…

Q: Show the intermediate(s) and product(s) for the reaction of the molecule below with KNH₂. NO₂ Br

A: Given is organic compound. given compound will undergo nucleophilic aromatic substitution reaction…

Q: 15) Which of the following structures is correct for 1,2-dibromo-2-methyl butane? CH₂-CH-CH₂Br Br…

A: Correct structure

Q: Using values from Appendix C of your textbook, calculate the value of Keq at 298 K for each of the…

A:

Q: The following mechanistic pathway is a plausible reaction. Please, build an argument about the…

A: The question is based on organic reactions. We need to explain the product formation.

Q: Complete the following chart, in order from left to right Mass Number Protons Neutrons Electrons…

A: A neutral species has the same number of protons and electrons, and the number of protons in the…

Q: Pure magnesium metal is often found as ribbons and can easily burn in the presence of oxygen. When…

A: Mass of Mg used = 4.29 gMass of O2 provided = 9.01 g% yield of the reaction = 84.9%It is required to…

Q: 3. Use curved arrows to show electron movement in the reactant side and draw the product/s of the…

A: Curved arrows show the movement (flow) of electrons during bond breaking and/or bond making…

Q: Look at the Redox Reaction shown below. In transforming the starting material to product, how many…

A: A redox reaction, also known as a reduction-oxidation reaction, is a chemical reaction in which both…

Q: Worksheet 4 Give the products of the following reactions :0° to (b) @ :0: : 0: Nato etter Nat:0

A: Esterification is the process of mixing an organic acid derivative with Metal alkoxide (ROM) to make…

Q: What is the mass percentage of O in C₂H6O₂?

A: C = 12, H = 1, O = 16

Q: Provide the major product(s) of the following reaction and the corresponding mechanism.

A: Benzene rings are electron-rich due to the presence of pi  electron density. Hence it can be…

Q: A balanced chemical equation contains the term "2Ba(OH)2-8H₂O", which is used as a lubricating…

A: Given: The coefficient of  is 2.

Q: Reset (Z)- (E)- 2- 4- 3- 5- 6- 1- iso sec- cyclo tert- tri di eth meth pent hex oct hept yne ene yl…

A: -Select the parent chain with the longest possible continuous carbon chain with a maximum number of…

Q: - Draw Lewis structures for each of the following. Give the total number of valence electrons,…

A:

Q: 2. The following reaction proceeds to give an anti- addition product. Other than stereochemistry,…

A: Given reaction is oxymercuration reaction.This gives anti-addition product.

Q: this was incorrect, im confused

A: -Select the parent chain with the longest possible continuous carbon chain with a maximum number of…

Q: A sample of gas occupies a volume of 66.2 mL. As it expands, it does 116.7 J of work on its…

A: Given,The initial volume of a gas = 66.2 mLwork done by gas on surroundings = 116.7 Jconstant…

Q: Interpret Lewis symbols for atoms and ions. (a) How many dots are there in the Lewis symbol for P…

A: The Lewis structures are diagrammatic representations which indicate how the valence electrons are…

Q: Provide the correct IUPAC name for the compound shown here. H3C. .. CH3

A: • Identify the longest continuous carbon chain.• Identify the substituent group attached to the…

Q: Why doesn't the double bond on the internal alkene attack the proton in the first step? Why does the…

A: Given is organic reaction.In which alkene is converted into alcohol.This reaction is known as…

Q: What are the products of the following reaction? CHO 1. NaCN /HCI -OH -OH CH₂OH н- I I H III CHO -OH…

A: The Kiliani–Fischer synthesis lengthens an aldose sugar carbon chain (four carbon to five carbon) by…

Q: 7. Which Newman projection represents the least stable conformation for cis-1-t-butyl-2-…

A: Stability of the cyclohexane conformations depend on the position of the substituents. The larger…

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.