According to the diagram, during a phase change the temperature - F increases G decreases H fluctuates Jremains constant GOS adua to

Q: Give the oxidation number of each element in the following complex salt. [Cr (NH3)s Br] SO4

A: Given :- chemical formula of complex salt = [Cr(NH3)5Br] SO4  To determine :- oxidation no.of each…

Q: Enter the correct stoichiometric coefficients when the following equation is balanced under basic…

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Q: 1) t-BUOK 2) NBS, hv Br 1 2

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Q: What mass of benzoic acid (130 g/mol) is required to prepare 75.0 mL 120.0 mM benzoic acid solution?

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Q: Which equations heat, cool and can either heat or cool the surroundings? C4H4S(s) → C4H4S(l)…

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Q: Michael Reaction → 1,5-diketone |. NaO at, acetone 2. 3. H30+, heat

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Q: Calculate the AHxn for this overall reaction: 2 H3BO3(aq) B203(s) + 3 H20) given the following…

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Q: An unknown compound with a molar mass of 674.7 g/mol was isolated from bacterial cells. This…

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Q: 3. Which of the following Lewis structures for PO43 has the lowest formal charges? :0: 3- :ö: 3- :0:…

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Q: The pH of a 0.95M solution of benzoic acid (HC,H,Co,) is measured to be 2.11. Calculate the acid…

A: Given :  Concentration of benzoic acid solution = 0.95 M  pH of solution = 2.11  To calculate :-…

Q: Draw the structure of the major organic product(s) of the reaction. 1. LIAIH4, ether 2. H,0* • You…

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Q: What is the final temperature of both substances at thermal equilibrium? A 31.2 g wafer of pure gold…

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Q: When 1.06 g of a certain molecular compound X are dissolved in 85.0 g of dibenzyl ether…

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Q: By how many kilojoules per mole is the energy of O2 increased when it absorbs UV radiation with a…

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Q: Meo Meo Me 5. Me Meo

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Q: Draw the structural formula for 1-ethyl-3-methylcyclohexane.

A: Given-> 1-ethyl-3-methylcyclohexane

Q: Enter the oxidation number for Cl in Al(ClO)3. Include sign

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Q: 9. Sketch a titration curve for the titration of 0.100M NH3 (weak base) with 0,100 M HCI. Label the…

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Q: Write the overall equation for the process assuming a one electron transfer takes Page 3 It is…

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Q: The normal freezing point of a certain liquid X is -2.70 °C, but when 43.3 g of potassium bromide…

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Q: A diprotic weak base (B) has pK, values of 4.058 (pK) and 7.102 (pKa). Calculate the fraction of the…

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Q: 8 10 11 12 13 14 A chemist titrates 150.0 mL of a 0.2250M trimethylamine ((CH,) N) solution with…

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Q: 9. Acetylene gas (C2H2) is used in welding. Use bond dissociation energies to determine the AErxn,…

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Q: When an aqueous solution containing gold (III) salt is electrolyzed, metallic gold is deposited at…

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Q: An analytical chemist is titrating 171.3 mL of a 0.5600M solution propylamine (CH,NH,) with a…

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Q: d. Which average molecular weight determination did the fraction 3 most significantly affect and…

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Q: When 634, mg of a certain molecular compound X are dissolved in 60. g of cyclohexane (CH2), the…

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Q: The following information is given for lead at 1 atm: AHvap (1740.00°C) = 858.2 J/g T = 1740.00°C…

A: Given: The Tm of lead = 328.00 ∘C The specific heat of solid lead = 0.1300 J/g ∘C The specific heat…

Q: Calculate the energ -1 ,-1

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Q: Calculate the standard potential for the cell.

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Q: Design a plausible synthesis for the following transformation. (The 3-carbon chain remains intact in…

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Q: 3. Calculate the equilibrium constant for the following reaction at 298 K. 3C2H2 (g) + CoHe (g) AG°…

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Q: 3 Consider the following samples of gases: -He N2 (i) (ii) (iii) If all three samples are at the…

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Q: hat will be the major product for the following transformation? reactions done on benzene ring and…

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Q: For each of the two electrochemical systems below write each half reaction and then calculate the…

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Q: Question 15 What synthetic goal is achieved by subjecting an alkene to a hydroboration-oxidation…

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Q: A student dissolves 20. g of aniline (CH,NH,) in 500. mL of a solvent with a density of 0.83 g/mL.…

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Q: a. Convert a pressure of 0.570 atm to mm Hg.       b. Convert a pressure of 3.2  kPa to units of mm…

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Q: From the above data, what are the standard half-cell potentials for silver and iron/platinum?…

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Q: 100mL of a 0.100M solution of NaCl is prepared (standard solution). This solution will be used to…

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Q: A current of 3.27 A is passed through a Pb(NO3)2 solution. How long, in hours, would this current…

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Q: Design the fellowing synthesis. -> 2. 2-C ethyl-2-one. but an -2-ol

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Q: For citric acid  H3C6H5O7, what reaction would correspond to Ka3

A: Given :- chemical formula of citric acid = H3C6H5O7  To write :- its reaction correspond to Ka3

Q: 5. 50 ml of 0.100 M HC2H3O2 is titrated with 0.25 M sodium hydroxide. Ka for HC2H3O2 is 1.8 x 105 a.…

A: given, volume of acetic acid = 50 mL  molarity of acetic acid = 0.100 M molarity of NaOH = 0.25 M

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Q: Which of the following complex ions is paramagnetic? A) [ZnCl.] B) [Fe(H2O)s]2- (H2O is weak field…

A: ANS. Option B) [Fe(H2O)6]+2

Q: 10) If 100 grams of water saturated with potassium chloride, KCI at 50°d were cooled to 20°C, how…

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Q: 12.2 g of 2-methylbutan-2-ol (MW 88.15 g/mol) reacts with excess H2SO4 to form 7.98 g of…

A: Given data,Mass of 2-methylbutan-2-ol=12.2 gMolecular weight of 2-methylbutan-2-ol=88.15 g/molMass…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.