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Part A: 50 mL of 2.0 M acetic acid (CH3COOH) was titrated with 1.0 M NaOH. What is the pH at the equivalence point of this titration? The ionization constant is 1.8 × 10-5.
1. 7.00 2. 9.52 3. 9.28 4. 9.20 5. 10.52
Part B: A 200 mL sample of 0.5 M N2H4 (hy- drazine) is titrated to its equivalence point with200mLof0.5MHCl. IftheKb ofN2H4 is 2.5 × 10-6, what is the pH of the solution at the equivalence point?
1. 8.5 2. 4.5 3. 1.5 4. 7.0
Calculate delta U of a gas for a proces in which the gas obsorbs 3 J of heat and does 10 J of work by expanding
Could you tell me what is the purpose of this reaction (Michael and aldol condensation reactions), and the stepwise mechanism of the reaction.
Using the data on a seperate page for the determination of heat of nuetralization extrapolate to the mixing time, determine the intial and final temp for the solutions. 50mL of 2.0M HCL and 2.02M NaOH were mixed and the heat neutralization was det..
Protein Sequencing Question. Determine the sequence of a peptide consisting of 14 amino acids on the basis of the following data
The analysis of Ca2+and Mg2+in urine samples could be performed in a way similar to the EDTA analysis of the calcium content in water. For example, a 25.0 mL aliquot of a urine sample (buffered to pH = 10.0) required 17.2 mL of 0.0776 M EDTA to re..
What kind of experimental conditions do you think you would need in order to carry out the reverse reaction. (The preparation of ester from an acid and alcohol)
What is the molarity of the solution if 310 of the solution reacts with magnesium to produce 7.40 of gas measured at STP?
What is the most likely chemical explanation for the fact that butter is a solid at room temperature while olive oil is a liquid?
How are vapor pressure and boiling point of a liquid related to each other? What does intermolecular attraction have to do with either
Every antacid contains one or more ingredients capable of reacting with excess stomach acid (HCl). The essential neutralization products are CO2 and/or H2O. Write net ionic equations to represent the neutralizing action of the following popular an..
Calculate the molar heat of combustion of fructose using the data from this experiment. Since this experiment is carried out under conditions of constant volume, we are measuring ?E. Your answer should be in kJ/mol and entered to 3 sig. fig.
Why can you not distinguish between an aldehyde and a ketone using only the 2,4-dinitrophenylhydrazine reagent?
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