The value of ΔS° for the catalytic hydrogenation of acetylene to ethane,   C2H2 (g)  +  2H2 (g)  →  C2H6 (g)   is __________ J/K∙ mol. A) -76.0 B) +440.9 C) -232.5 D) +232.5 E) +28.7

Q: Rank the following four compounds in order of increasing reactivity (least reactive to most…

A: For the reaction of carboxylic acid derivatives ( Acid chlorides, Amides, esters, anhydride,  Ketone…

Q: What does a negative ÄGròn tell you about the reaction? The reaction is absorbing heat from the…

A: From the Gibbs free energy equation, we know that - ∆G = ∆H - T ∆S Where - ∆G = Gibbs free energy…

Q: Select one: O A. O B. - + + HC1 O= 25°C A1C13 H C1 O

A: This question belongs to organic reaction mechanism.

Q: Which molecule has a nonzero dipole moment? (A) CF4 (B) C₂F4 (C) SF4 (D) SF6

A: A dipole moment is a unit used to describe how far apart two electrical charges are from one…

Q: Carbon disulfide gas and oxygen gas react to form sulfur dioxide gas and carbon dioxide gas. What…

A: We know, 1mole has volume=22.4L if we convert Liter to mL- 22.4L×1000mL1L=22400mL 22400mL volume…

Q: The pK, of acetic acid, HC₂H3O2, is 4.96. A buffer solution was made using an unspecified amount of…

A: A buffer is a solution which resist any change in pH on adding a small amount of acid or base . it…

Q: What is the rate-determining step in the mechanism of an electrophilic substitution reaction of…

A: Rate of reaction is always given by the slowest step of the reaction mechanism. The slowest step is…

Q: When plotting the standard calibration curve for equilibrium constants the independent variable is…

A: In a graph - - independent variables are plotted on the X-axis (horizontal axis).  - dependent…

Q: The integrated rate law is an equation that describes the concentration of a reactant over time (t).…

A: The given reaction is X(g) = Y(g) +Z(g) k= 1.60 M-1min-1 We need to calculate concentration of A…

Q: Consider a hypothetical chemical reaction: A+B C+D (In this equation A, B, C and D stand for some…

A: Answer: Heat of reaction is always equal to the difference between average energy of products and…

Q: When analyzing the results of an experiment, often you will be reporting a percent yield. What is a…

A: Percentage yield, actual yield, and theoretical yield are terms used in chemistry to describe the…

Q: Determine the concentration of a sulphuric acid solution with a pH of 0.59.

A:

Q: Data Table 4 Constants needed for the calculations: c = 3.00 x 108 meters/second 소소 Planck's…

A:

Q: Be sure to answer all parts. Complete the following reaction by supplying the missing reactant.…

A: The alkene upon hydration gives rise to alcohol.  Here there are two possibilities of formation of…

Q: When 28.7 mL of 0.500 M H₂SO4 is added to 28.7 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50…

A: Volume of 0.500 M H2SO4 is 28.7 mL and the volume of 1.00 M KOH is also 28.7 mL. Initial temperature…

Q: 6) Calculate the pH of the resulting solution when 15.00 mL of 0.15 M HNO3 is titrated with 20.00 mL…

A:

Q: Draw the furanose a-anomer Haworth projection from the Fischer projection shown below. H. CO H- OH…

A:

Q: Use the Henderson-Hasselbalch equation to determine how to make 100 mL of buffer containing acetic…

A:

Q: What diene and dienophile would react to give the following Diels-Alder product? A Hi X:( IV A. I O…

A:

Q: Which of the following processes have a S > 0? CH3OH(1)→ CH3OH(s) ON₂(g) + 3 H₂(g) → 2 NH3(g) CH4(g)…

A: Entropy: Entropy can be defined as the measurement of randomness or disorderness in the…

Q: Name the cycloalkane shown below. (Always provide IUPAC name unless otherwise specified *CH,CH2CH,…

A: Answer:- This question is answered by using the simple concept of naming the organic compounds using…

Q: When the following equation is balanced properly under acidic conditions, what are the coefficients…

A:

Q: Be sure to answer all parts. The following graph depicts the relative magnitudes of the first five…

A:

Q: A mass of gold increases its temperature from 72°C to 152°C to produce 309.6 J heat. What mass of Au…

A:

Q: Draw a structural formula for the major organic product of the reaction shown. CH3 CHCH₂CCH3 CH3 +…

A: Alkenes reacts with halogens to form vicinal dihalides as product.  Alkenes reacts with hydrogen…

Q: Gaseous butane (CH. (CH₂(CH₂)₂CH₂) will react with gaseous oxygen (O₂) to produce gaseous carbon…

A: Answer: Limiting reagent is the reactant that exhaust first in the chemical reaction and decides the…

Q: The following pictures represent the equilibrium mixtures of five different chemical reactions. All…

A: Given Reaction: A+B⇔AB Equilibrium constant can be written as: Keq=[AB][A][B]

Q: What is the de Broglie wavelength (in nm) associated with a 2.50-g Ping-Pong ball traveling at 16.5…

A:

Q: Which compound is most reactive in an S1 reaction? Br Select one: O A. II OB. N OC. III OD. I Br II…

A: SN1 mechanism:  The reaction proceed through a Carbocation intermediate.  The more stable the…

Q: CH3 CH3 -OCH₂CH₂CHCH² NaOH, H₂O CH³CHCH₂CH₂C_OCH₂CH₂CHCH3 a. Draw the structure of the tetrahedral…

A: Ester shows an nucleophilic addition reaction because it has ester carbonyl group.

Q: Attempt 1 A reaction has a rate constant of 0.211min ^ - 1 at 373 K and a rate constant of 0.922min…

A: Rate constant (k), k1 = 0.211 min-1 k2 = 0.922 min-1 Temperature (T), T1 = 373 K T2 = 743 K…

Q: A 24.7 mL sample of 0.345 M formic acid (HCHO₂) is titrated with 0.345 M NaOH. Calculate the pH…

A: This question belongs to dynamic equilibrium.

Q: CO2 and SiO2 have similar formulae but very different melting points, why?

A:

Q: Lead forms two compounds with chlorine, PbCl2 and PbCl4. The melting point of PbCl2 is 501oC, and…

A: Pbcl4 at room temperature decomposes into PbCl2 and Cl2 . pbCl2 is a white solid and PbCl4 is a…

Q: Draw the mechanism for an Aldol condensation-dehydration reaction between cyclopentanone and 4-…

A: Aldol Condensation can be defined as an organic reaction in which enolate ion reacts with a carbonyl…

Q: Consider the following reaction: Calculate AG for this reaction at 25 °C under these conditions: AG=…

A: The free energy serves as a possibility factor for occurrence of reactions. It is the useful work…

Q: [References] A 3.7-L sample of helium gas, collected at 0.00°C and 1.00 atm, is compressed into a…

A:

Q: A Fischer projection of a monosaccharide is shown below: CHO [|] H- -OH H- H- -OH CH₂OH Classify…

A:

Q: At 500 K, hydrogen and iodine can form hydrogen iodide in the gas-phase reaction: 2HI(g) H₂(g) +…

A: The equilibrium constant (K) is a mathematical representation of the ratio of concentrations of…

Q: PROVIDE SYNTHESIJ (3STEP)) 에 Thom OH

A: We have been given an organic reaction.The question is based on the concept of organic synthesis. We…

Q: At 25 °C, the reaction 2NH3(g) = N₂(g) + 3H₂(g) has Ke=2.3 x 10⁹. If 0.052 mol NH3 is placed in a…

A:

Q: 3. The molecule 14N160 absorbs in the microwave region with a gap of 3.390 cm¹ between adjacent…

A:

Q: If 5.5 moles of or tame are combusted according to the following unbalanced equation how many moles…

A:

Q: (a) Calculate the percent lonization of 0.00820 M hydrosulfuric acid (K, 9.5e-08). % lonization - %…

A:

Q: Which ones of the following cannot act as a buffer solution? Select all that apply.. 0.50 M HCN and…

A: A buffer is a solution which resist any change in pH on adding a small amount of acid or base . it…

Q: 22.5 Propose a synthesis of the compound shown below using the acetoacetic ester synthesis.

A: Ethylacetoacetate (EAA) contains activemethylene protons, these are acidic in nature ,when strong…

Q: Predict the product obtained when 1-pentyne reacts with R₂BH followed by H₂O2, NaOH: Product: [ Draw…

A:

Q: I III Br Br Br₂ Light Na*OC₂H5 HOC₂H5 II IV HBr + ROOR Br ? Br

A:

Q: ) Consider Table 4 and suggest why FCH 2 CH 2 Br (5.7 vs. 1) has a higher S N 2 reaction rate than…

A:

Q: What is Chemistry?

A: Chemistry is the area of science that studies the characteristics, make-up, and structure of…