In a constant‑pressure calorimeter, 70.0 mL of 0.850 M H2SO4 was added to 70.0 mL of 0.270 M NaOH. The reaction caused the temperature of the solution to rise from 23.72 ∘C to 25.56 ∘C. If the solution has the same density and specific heat as water (1.00 g/mL and 4.184 J/(g⋅°C), respectively), what is ΔH for this reaction (per mole of H2O produced)? Assume that the total volume is the sum of the individual volumes. ΔH=

Q: When 50.0 mL of 1.60 M of HCl(aq) is combined with 50.0 mL of 1.70 M of NaOH(aq) in a coffee-cup…

A: The amount of heat required to raise the temperature of the sample is given by: q = mc∆Tq is the…

Q: When 107 g of water at a temperature of 23.5 °C is mixed with 65.8 g of water at an unknown…

A: According to the data given in the question,Weight of water at 23.5℃ (296.5 K) = 107 gWeight of…

Q: The thermite reaction can be written as 2Al(s)+Fe2O3(s)→2Fe(s)+Al2O3(s)                  ΔH∘=−850kJ…

A: Given: The value of  is -850 kJ. The amount of heat released in 314.5 kJ. Introduction: According to…

Q: The enthalpy change for the reaction of hydrogen gas with fluorine gas to produce hydrogen fluoride…

A: The formation of hydrogen fluoride from hydrogen gas and fluorine gas is expressed as, H2g+F2g→2HFg…

Q: When 15.0 mL of 3.00 M NaOH was mixed in a calorimeter with 13.0 mL of 3.00 M HCl, both initially at…

A: Given : Concentration of NaOH = 3.00 M Concentration of HCl = 3.00 M Volume of NaOH solution = 15.0.…

Q: When 50.0 mL of 1.20 M of HCl(aq) is combined with 50.0 mL of 1.30 M of NaOH(aq) in a coffee-cup…

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Q: A reaction of 1.00 gram of NaOH with 100 mL of 1.0 M HCl in a styrofoam calorimeter causes a 10.5°C…

A: The mass (m) of the reaction solution is calculated as shown below where 100 mL is the total volume…

Q: A calorimeter contains 23.0 mL of water at 14.5 °C . When 2.20 g of X (a substance with a molar mass…

A:

Q: The highly exothermic thermite reaction, in which aluminum reduces iron(III) oxide to elemental…

A: The balanced reaction taking place is given as, => 2 Al (s) + Fe2O3 (s) -------> 2 Fe (s) +…

Q: A calorimeter contains 34.0 mL of water at 14.0 °C . When 2.30 g of X (a substance with a molar mass…

A:

Q: When 5.40 g of a solid mixture composed of NH4Cl and CaCl2 was dissolved in 100.0 mL of water, the…

A: Given Mass of NH4Cl = 1.78 g Mass of CaCl2 = 3.26 g

Q: A student transferred 50.0 mL 1.00 M HCl into a coffee-cup calorimeter, which had a temperature of…

A: Given: Volume of  HCl=  50.0mL Concentration of HCl= 1.00M Volume of NaOH= 50.0 mL Concentration of…

Q: 2. Octane, a major component of gasoline, burns according to the reaction: 20,H,8 0) + 250, (@)…

A: Given,

Q: Consider the reaction: C,H,OH) + 30, (g) →2CO,(g)+3H,01), AH = -1.37 x 10° kJ When a 21.1-g sample…

A:

Q: When a system gives off heat and does not work on its surroundings, delta E is always(

A: According to the First law of thermodynamics,  ∆E = q + W Here, q = Heat released or absorbed.…

Q: 2. The reaction of hydrochloric acid, HCl and sodium hydroxide, NaOH in water is an exothermic…

A: Given, Volume of HCl & NaOH solution = 50.0 mL Concentration of HCl & NaOH solution = 1.00 M…

Q: What is a standard state? What is the standard enthalpy change for a reaction?

A: Standard state of a material is the reference point  that is used to calculate its properties under…

Q: A calorimeter contains 20.0 mL of water at 14.5 ∘C . When 1.20 g of X (a substance with a molar mass…

A: From the given information, we can calculate the mass of water (solvent) and the mass of the…

Q: A scientist measures the standard enthalpy change for the following reaction to be 11.0 kJ…

A: Given: Standard reaction enthalpy= 11.0 kJ

Q: The following solutions are combined in a calorimeter to determine the enthalpy of the…

A: The concentration of the NaOH solution is 2.665 M.

Q: The contents of the closed box in each of the following illustrationsrepresent a system, and the…

A: The points should be kept in mind while solving this problem, Heat absorbed by the system is called…

Q: Need help with #4

A: The balanced reaction taking place is given as, => CuSO4 + 2 KOH  → K2SO4 + Cu(OH)2  Given:…

Q: (6) 2. Octane, a major component of gasoline, burns according to the reaction: 20,H ) 250,…

A:

Q: A 50.0 mL solution of 1.2 M HCl at 24.1oC is mixed with 50.0 mL of 1.3 M NaOH, also at 24.1oC, in a…

A: HCl = 50.0 mL x 1.2 M = 60 mmol = 0.060 mol NaOH = 50.0 m X 1.3 M = 65 mmol = 0.065 mol here HCl and…

Q: A calorimeter contains 16.0 mL of water at 14.5 °C. When 2.20 g of X (a substance with molar mass of…

A: Given :  Mass of X = 2.20 g  Volume of water = 16.0 mL  Heat capacity (C) = 4.18  ∆T = 25.5 - 14.5 =…

Q: At 850°C, CaCO3 undergoes substantial decomposition to yield CaO and CO2. Assuming that the ∆H°f…

A: Standard enthalpy of formation of CaCO3 (s) = -1207 KJ/mol Standard enthalpy of formation of CaO (s)…

Q: Consider the following reaction:   2 HCl(aq) + Ba(OH)2(aq)  ⟶⟶ BaCl2(aq) + 2 H2O(l)          ΔH=…

A: When the acid and base that is one equivalent to both of the components undergoes neutralization…

Q: A 25.0 mL portion of dilute HCl (aq) is combined with a 25.0 mL portion of dilute NaOH in a…

A: Given that : The volume of HCl = 25.0 mL The volume of NaOH = 25.0 mL The initial temperature = 23.3…

Q: A calorimeter contains 35.0 mL of water at 13.0 °C. When 1.80 g of X (a substance with a molar mass…

A: Given,The volume of water = 35.0 mLSo, mass of the water will be = (35.0 mL x 1.0 g/mol) = 35.0 g =…

Q: In a constant-pressure calorimeter, 55.0 mL of 0.300 M Ba(OH), was added to 55.0 mL of 0.600 M HCI.…

A: Given, Ba(OH)2 taking part in reaction = 55.0 mL of 0.300 M HCl taking part in reaction = 55.0 mL of…

Q: At 850°C, CaCO3 undergoes substantial decomposition to yield CaO and CO2 Assuming that the ΔH°f…

A: The balanced chemical equation is given below, CaCO3(s)→CaO(s)+CO2(g) To calculate  ΔH°f values. Add…

Q: When 50.0 mL of 1.24 M of HCI(aq) is combined with 50.0 mL of 1.32 M of NaOH(aq) in a coffee-cup…

A:

Q: hen a 8.00 g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of…

A: The molar heat of the solution tells about the energy released or absorbed for every mole of a…

Q: In an experiment, 2 grams of zinc and 150 mL aq CuSO4 were made to react, then as observed, the…

A: Given: Mass of zinc reacting = 2 g Volume of CuSO4 solution = 150 mL Initial temperature of solution…

Q: 27. The addition of 3.15 g of Ba(OH)2·8H2O to a solution of 1.52 g of NH4SCN in 100 g of water in a…

A: The balanced reaction for the reaction between Ba(OH)2.8H2O with NH4SCN in aqueous solution.…

Q: A scientist measures the standard enthalpy change for the following reaction to be 11.0 kJ…

A: Standard Enthalpy change of a reaction is the sum of the standard enthalpies of products minus the…

Q: A student transferred 50.0 ml 1.00 M HCl into a coffee-cup calorimeter, which had a temperature of…

A: By reaction of NaOH to HCl solution,  there is an increase in the temperature. Thus change in…

Q: Instant hot packs contain a solid and a pouch of water. When the pack is squeezed, the pouch breaks…

A: The reaction is given below.LiCl (s)  -->  Li+(aq) + Cl−(aq)         ΔH=  −36.9kJHeat of reaction…

Q: 3. A quantity of 2.00 x 10² mL of 0.862 M HCl is mixed with 2.00 x 10² mL of 0.445 M Ba(OH), in a…

A:

Q: In a calorimetric experiment, 6.48 g of lithium hydroxide, LiOH, was dissolved in water. The…

A:

Q: A 50 ml solution of 1.2M HCl at 24.1OC is mixed with 50 ml of 1.2M NaOH, also at 24.1oC, in a…

A: Given data Neutralization reaction :    NaOH(aq)   +   HCl(aq)   →    NaCl(aq)    +   H2O(l) Volume…

Q: When 50.0 mL of 1.27 M of HCl(aq) is combined with 50.0 mL of 1.32 M of NaOH(aq) in a coffee-cup…

A:

Q: The addition of 3.15 g of Ba(OH)2-8H20 to a solution of 1.52 g of NHASCN in 100 g of water in a…

A:

Q: 4. A 50.0 mL solution of 1.2 M HCI at 24.1°C is mixed with 50.0 mL of 1.3 M NaOH, also at 24.1°C, in…

A:

Q: A quantity of 50.0 mL of 0.200 M Ba(OH)2 is mixed with 50.0 mL of 0.400 M HNO3 in a…

A: The balanced chemical equation is written as, BaOH2aq+2HNO3aq→BaNO32aq+2H2Ol The required amount of…

Q: When a 6.50 g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee cup…

A: Heat added to the system or Quantity of heat released from the reaction:

Q: -. The contents of the closed box in each of the following illustrations represent a system, and the…

A: Since numerical values of w or Q are not given, we have to use sign convention to find the sign of…

Q: Coffee cup calorimetry experiments can be used to obtain DHfo for magnesium oxide. To determine the…

A: In the given question we have to calculate the heat capacity of the calorimeter. by using the…

Q: In a constant pressure coffee-cup calorimeter, 100.0 mL of 0. 050 M of Ag+ was mixed with 100.0 ml…

A: Given : Concentration of Ag+ ion = 0.050 M Volume of Ag+ solution = 100.0 mL = 0.100 L…