Determine the mass of Na₂HPO4 and the volume of 0.450 M HCI solution required to make 1.30 L of a buffer solution at pH=7.05 and at a total concentration of 0.27 M. pK₂2(H3PO4)=7.21.

Q: A sample of glass, which has a specific heat capacity of 0.670 J-g¹c1, is put into a calorimeter…

A: Given,Cp for glass sample = 0.670 J g-1 ℃-1 T1=86.6 ℃ T2=20.1 ℃ mass of glass sample = m = ?

Q: 1. Two liters of N2 at 0°C and 5 atm pressure are expanded isothermally against a constant pressure…

A: Given, Volume of N2 = 2 L Temperature = 0°C Pressure = 5 atm W=? , ∆E=? , Q=? , ∆H=? Note: Since you…

Q: CN CH2CH3 NACN PQ-6. What is the rate determining step of this reaction? Hirgh H3C OTs acetone H3C…

A: • For SN2 reaction Nucleophile attack from                          Back side .• In case of SN2…

Q: (b) What is E-factor?

A: E - factor is used in Green chemistry which is a ratio of total mass of waste and mass of product.…

Q: Please identify and assign the stereocenters using R and/or S in the following isomer of cocaine.…

A: A question based on isomerism, which is to be accomplished.

Q: 3. Professor Jackson had an unknown alkene. She subjected it to ozonolysis and obtained two…

A: IR spectroscopy is used to determine the functional groups present in the sample. Different…

Q: 7. Manganese has BCC unit cell and has a PMn = 4.68 g/cm³. From this information, calculate the…

A: We are required to find the edge of cube cell.

Q: PQ-8. What is the major product of this reaction? (A) (B)

A: zaitsev elimination: When alkyl halides have two or more different β-carbons, more than one alkene…

Q: 0. Which two structures ionize with loss of bromide to form the same carbocation? Br Br Br 20 Br I…

A: In a chemical reaction; the substance which involves in conversion is said to be reactant whereas…

Q: Answer the following questions based on the phase diagram (not drawn to scale) for hydrogen, H₂. P…

A: We are given the following phase diagram:

Q: What is the major product of the following reaction? ОН H+ + (еxcess) HO ОН HO- ОН

A: When ketone compound is treated with alcohol then ketal product formation takes place in presence of…

Q: 4.40 When iron and steam react at high temperatures, the fol- lowing reaction takes place: 3 Fe(s) +…

A: Given:  Mass of Fe3O4 = 897 gm  %yield of the reaction = 69 %

Q: Prepare each compound from CH,CH,CH,CH,OH. More than one step may be needed. CH,CH,CH,CH,OCH,CH3

A: Given is ,synthesis of ether from alcohol.

Q: Which of the following is the correct Lewis diagram showing the compound formed from sillcon (14)…

A:

Q: Reaction: 2HCI + Ca(OH)2 →2H20 + CaCl2 Initial Burette Volume of 0.O5M HCI Volume of saturated…

A: Molarity is defined as total number of solute present in 1000 ml of solution . For neutralisation we…

Q: 1. Consider only 2 amino acids H H 1 COOH -4---- NH₂ с 1 C_COOH R' R Write the structural formula…

A: Note: Since you have asked multiple questions, we will solve the first question for you. If you want…

Q: 1. PB13 2. NaCN CH3 OH

A: The given reaction is an example of SN2 reaction where the reaction takes place in a single step. In…

Q: 3. For the equilibrium: 0.600 mol IBr is placed in a liter container. 2 IBr (g) + I2 (g) + Brz (g),…

A:

Q: 11) Select the structure of the major product in the following reaction. 1) KMnO, OH, hot 7 ii) H₂O

A: first KMnO4 oxidizes alkene to 1,2 diol under basic condition (OH-).but in hot condition and acidic…

Q: 20. Clearly explain why it would be impossible to prepare this compound via a Williamson ether…

A: Williamson ether synthesis: The Williamson ether synthesis is a method of formation of an ether from…

Q: 4) Given the reaction and data below: 2 NOCL (g) → 2 NO(g) + Cl2 (g) [NOCI]o (molecules-cm-3) 3.00 x…

A: a. Rate law can be determined from the order of reaction with respect to NOCl.  Rate = k[NOCl]^x…

Q: For the following 6 isomers; please identify at least 3 pairs of enantiomers, 3 pairs of…

A:

Q: To identify the amount of caffeine in my coffee using an HPLC instrument, standard solutions of…

A: We are given the signal versus concentration data for standard solutions. So first we have to plot…

Q: Based on the chemical equation provided, which of the following is equivalent to K,? [Ag*][CH]…

A:

Q: Determine the number of each type of atom in Ca3(PO4)2.

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Quien below Some ontions & which of the tectrolyes NHued, NH₂OH, CH3Cook, weak H₂B03, CarOHT₂, HNO3,…

A: Electrolytes : These are chemical species which conduct electricity when dissolved in…

Q: State the rule of naming oxy acids. • Name the following oxy acids: HNO3_ HNO2 H2SO4. H2S3. H2CO3_…

A: An oxyacid is an acid that consists of hydrogen, oxygen, and a third element. The third element is…

Q: 5) Given the reaction and data below: 2 H₂O2 (aq) Time (s) 0 2.16 x 104 4.32 x 104 6.48 x 104 2 H₂0…

A: Rate of disappearance of reactant (H2O2) = (concentration difference of the given two times)/(time…

Q: Which reactions have a positive ASrxn? 2 A(g) + 2 B(g) –→ 5 C(g) 2 A(g) + 3 B(g) 4 C(g) A(s) + B(s)…

A: 1) The change in entropy ∆Srxn of reaction is depend on the number of moles gaseous constituent in…

Q: Given the following mass doublet values (in units of 10- u), compute the corresponding values for…

A: (1) m(C3H) - m(37Cl) = +41922.2 /-0.3 in (10-6 u) =  +0.0419222/-0.0000003 So 3m(12C) + m(1H) -…

Q: Match each item on the left with the corresponding item on the right. 1001 80 PE (KJ) 60 78 kJ .87…

A: Given Graph:To determine the , Activated energy of step 1 and step 2, Potential energy of transition…

Q: Name the following compounds: • NazSO4_ • Ca3(PO4)2_ • Sn(CO3)2 Hg(CIO2)2_ • Zn3(PO4)2. NHẠNO3 •…

A: As per rules only the first question can be answered.

Q: 4.50 Aluminum hydroxide can be dissolved in hydrochloric acid to form aluminum chloride and water.…

A:

Q: PQ-24. What is the major product of this reaction? H3C. E2 OK BCH3 H3C CH3 HsC OH H3C ČH3 Hoff minor…

A: During elimination in alkyl halides, more substituted double bond is formed.

Q: 5. Given the following data: + %O2(g) B2H6(g) + 302(g) + ½O2(g) H2O(1) 2B(s) B2O3(s) AH = -1273…

A: To get the desired reaction from the given data , we have to adjust the given reaction . If we…

Q: What is the major product for the following reaction? Br NaOH A

A: In the presence of heat,elemination reaction is proceed with the help of base. In this reaction NaOH…

Q: 2. What product is expected to form from the SN2reaction of 1-bromopentane with а. КОН? B. Nal?

A:

Q: An unknown gas, D, reacts with fluorine gas to form the compound DF (9), as represented by the…

A: First three subparts can be answered and please resubmit with the remaining parts later.   The given…

Q: A 20 g sample of ice at -10 °C is mixed with 100 g water at 80 °C. Calculate the final temperature…

A: Heat required by ice to convert into water at 0 oC = ms(Tf-Ti) + mLf…

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.