=-Li cat. H2SO4 HCO,H 90 оС THF, -78 °C

Q: Without referring to tables, predict which of the followinghas the higher enthalpy in each case: (a)…

A: Higher enthalpy:

Q: (b) Since reaction (2) is the sum of reactions (1) and (3), it follows that the sum of AH1 and AH3…

A: *The question is solved assuming that the value of enthalpy change (kJ) for 1and 2 is correct* No of…

Q: 6.56 Is AH positive or negative when 1 mol of water vapor con- denses to liquid water? Why? How does…

A: For an endothermic reaction, ∆H is positive whereas for an exothermic reaction, ∆H is negative

Q: HBr (aq.) Br heat D. OTs KOTBU H, ? HOTBU НI (2 еquiv.) ?

A:

Q: 1. KMnO4, OH- (warm) 2. H3O+

A: The given reaction is the oxidation of hexyne with Potassium permanganet to give pentanoic acid and…

Q: Use the equation to calculate changes in specific enthalpies: av dH = cpdT + V - T (), dP, to show…

A:

Q: A sample of solid lithium bromide and calcium chloride  were put in a lab for an hour. Their…

A: When 1 mol of a ionic substance is dissolve in water to form a solution at infinite dilution is…

Q: 9. Calculate the final temperature of a mixture of 100.0g of lead at 85.0°C are added to a mixture…

A: Answer: When lead, which is at higher temperature than ice, will be added with ice, lead will lose…

Q: 1) ? 5- `N2 CI- 2) ? H,C. CH3 KMno, / OH- 6- ? heat

A: 1) Firstly reaction will occur with nanh2 then with diazotization process.  2) with KMnO4 the simple…

Q: 1. NaOMe, HOME Br 2. H,O*, heat `Br MeO OMe 3. SOCĻ, heat 4. H¿N-iPr (2 equiv)

A: First of all, acid base reaction will take place followed by SN2 reaction.   Then acidic hydrolysis…

Q: If AHof for 2H:O2 and 2H2O are -188 kJ /mole and -286 kJ /mole. What will be the enthalpy change of…

A:

Q: a. но H,SO, H. b. NNH, C. CHCH,

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: a) Given that AgNO3 is -124.4 kJ/mol, at standard conditions, wha tis dH when 56g of AgNO3 (M =…

A: The standard enthalpy of formation of AgNO3 = - 124.4 kJ/mol. This suggests that the enthalpy for…

Q: How much heat energy is needed to warm 50.0 g of carbon (specific heat = 0.71 J/g ºC) from 25 ºC to…

A:

Q: When one mole of C6H6C6H6 is burned, 3.27 MJ3.27 MJ of heat is produced. When the heat from burning…

A: The number of moles of C6H6 is 1 mol. The heat released is 3.27 MJ. The weight of C6H6 is 7.87 g.…

Q: standard enthalpy of formation (ΔHof) for solid AlCl3.

A:

Q: A scientist dissolves an ionic compond into 370 g of water that i originaly at 35 C. The dissolution…

A: Heat capacity: The amount of heat required to increase the temperature of one gram of a substance by…

Q: Using the following data of heats of combustion in cal/g mole, calculate the following: (a) Heat of…

A: Given the data  i)C6H6 (l) → CO2 (g) and H2O (l) = 780,980ii) C6H6 (g) → CO2 (g) and H2O (g) =…

Q: If 15.5 J of heat are removed from 14.6 g of mercury (specific heat = 0.142 J/g oC) at 25.0 oC, what…

A: From the formula of specific heat capacity we can determine the final temerature of mercury sample .

Q: l in the blank with the correct terms. ne freezing of a substance is an process, and it is a change…

A:

Q: Calculate the molar heat of formation of solid PCI5 from the following information. P4 (s) +6 Cl2…

A:

Q: H,So,

A: Carboxylic acid react with alcohol form ester  called esterification

Q: 1. NaOMe, HOME Br 2. H,о", heat Br Meo OMe 3. SOC, heat 4. H2N-iPr (2 equiv)

A:

Q: from 22.80 °C to 26.58 °C. Assuming the density and specific heat of the resulting solution is 1.00…

A: Moles of AgNO3 = moles of HBr= n= M × V = 0.500 × 0.20 = 0.10 mol Total volume(V) = 200 +200 = 400…

Q: How much heat is evolved when 4.03 g of wateris producedwith excess oxygen?(6pts)H2(g)+ O2(g)→H2O(l)…

A: Answer:- This question is answered by using the simple concept of calculation of heat evolved using…

Q: b) Using the following data of heats of combustion in cal/g mole, calculate the following: (a) (b)…

A: The enthalpy changes associated with the various reaction is given above.

Q: Which of the included reagents is best for this reaction?

A: The reaction how given substrate transform into given product is shown below,

Q: Which has a Standard change in Gibbs Free Energy of Formation, AG°F value of zero at 25°C? O(g) all…

A:

Q: 1. PhMgBr, THF 2. PCC, CH2CI2 3. Os04, TBHP THF/H2O 4. Теон, PhН, heat

A: Ans

Q: Calculate T in Kelvin given E0cell= 0.970 volts n= 1 R= 8.314 J/mol K F= 96500 C/mole electrons…

A: The question is based on the concept of electrochemistry. we have to calculate the temperature based…

Q: Calculate the 7. empry spoe [ Give in grephite full calculation alang diagram I with

A:

Q: The following diagram represents the Carnot cycle. Which of the following processes present when…

A: Carnot Cycle: An ideal machine to explain about the maximum conversion of heat into the work.…

Q: The enthalpy of formation of gases of H20 at 25 oC is -241.82 kJ. mol-1. What is its value at 100…

A:

Q: What is omh's law?

A:

Q: f all the ice were to melt just as the temperature reached 3.0 °C, would this produce an error in…

A: According to the given question we assume the melting point of ice is 30 C. We have to explain as to…

Q: Calculate the ΔGo for X, in kJ, from the data given below at 327 K:   2X(g) → X2(g)     So…

A: Since the ΔGo is given by  ΔGo = ΔHo - TΔSo  Where T = temperature in K = 327 K

Q: If AH°, of H,0, is -285.8 KJ/mol and AH°, of H,0a is -241.8 KJ/mol, then the ÄH°,of evaporation of…

A: Since you have posted multiple unrelated questions, we are entitled to answer the first one with the…

Q: Determine AH° for the reaction CS2(1) + 3C12 (g)→CCL (1) + S2Cl2 (1). Use appropriate data from the…

A: Given that : The ∆H for various reactions are given below : CS2(l)  +  3O2(g)  →  CO2(g)  +  2SO2(g)…

Q: Calculate accurately using the equation w = sqrt(k/mu) the expected ratio ω(OD str.)/ ω(OH str.) for…

A:

Q: The normal boiling point of benzene is 80 °C. At 100 °C and 1 atm, which term isgreater in magnitude…

A:

Q: The combustion of how many moles of ethane (C2H6) would be required to heat 561 g of water from…

A:

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…

Q: and u=nRT 2P0 An ideal gas (mon o-atomic) → ABCDA has te mp To atA. then Find :- A(TO) 8 Po ---D- co…

A: An ideal monoatomic gas is in the cyclic process ABCDA. Point A has a temperature T0 and we have to…

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.