Homework Answers
1.
| Formula | Amount | Concentration | |
| Substance 1 | H2O | 100 mL | NA |
| Substance 2 | NaOH | 2 g | NA |
2.
| Formula | Amount | Concentration | |
| Substance 1 | HCl | 100 mL | 0.500 M |
| Substance 2 | NaOH | 2 g | NA |
3.
| Formula | Amount | Concentration | |
| Substance 1 | HCl | 50 mL | 1.00 M |
| Substance 2 | NaOH | 50 mL | 1.00 M |
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questions are based off the sheet with the short
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Question 1 What...
Lab 9 Heat of Reaction OBJECTIVE: To experimentally determine the heat of reaction for two exothermic...
Lab 9 Heat of Reaction
OBJECTIVE:
To experimentally determine the heat of reaction for two
exothermic reactions.
DISCUSSION:
The heat given off or gained in a reaction is called the heat
of reaction (∆?????????).
A reaction that releases heat is known as an exothermic
reaction; an endothermic reaction
is one that absorbs heat.
The heat of the reaction corresponds to one mole of the
reactant and is expressed in
kilocalories per mole of reactant or in kilojoules per mole of...
my main question here is how much do i need to dilute the 10 M of...
my main question here is how much do i need to dilute the 10 M
of NaOH woth water in a flask to get the new molarity needed to
complete this experiment?( ive already mixed 25 ml of the unknown
acid with 0.5 ml of the indicator in the volumetric
flask)
In this activity you will use the virtual lab to determine the concentration of a strong monoprotic acid. To do this, you can perform a titration using NaOH and...
If 1.85 g MgO is combined with enough 1.00 M HCl to make 100.0 mL of...
If 1.85 g MgO is combined with enough 1.00 M HCl to make 100.0 mL of solution in a coffee-cup calorimeter, the temperature of the resulting solution increases from 21.3°C to 35.7 °C. Calculate the enthalpy change for the reaction per mole of Mgo. Assume that the specific heat capacity of the solution is 4.18 J/g.K, and the density of the solution is 1.00 g/mL. A 0.704 g of a pure acid, HA, is dissolved in water and an acid-base...
HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(1) 100.0 mL of 0.500 M HCl is mixed with...
HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(1) 100.0 mL of 0.500 M HCl is mixed with 300.0 mL of 0.100 M NaOH in a coffee cup calorimeter. Assuming the temperature of the solution was initially 25.0 °C, and the final temperature of the solution was 26.7 °C, calculate the enthalpy of this reaction per mole of HCl. Assume the density of the water and acid and base solutions are all 1.00 g/mL.
Procedure 1: &n
Procedure 1: Run 1 Run 2 Mass of calorimeter and lid 117.1682 g 121.7315g Mass of NaOH pellets 1.9985 g 1.9984g Mass of calorimeter + lid + contents 217.0118 g 221.3835g Initial Temperature 23.9 celsius 24.5 celsius Final Temperature 27.1 celsius 28.0 celsius Procedure 2: Molarity of HCl solution = 2.10 M Molarity of NaOH solution =2.00 M Mass of calorimeter and lid 126.3469g 126.3447g Volume of HCl solution= 50.0 mL Volume of NaOH solution= 50.0 mL Mass of calorimeter...
In a coffee cup calorimeter, 50.0 mL of 1.00 M NaOH and 50.0 mL of 1.00...
In a coffee cup calorimeter, 50.0 mL of 1.00 M NaOH and 50.0 mL of 1.00 M HCl are mixed. Both solutions were originally at 24.6°C. After the reaction, the final temperature is 31.3°C. Given that the density of the NaCl solution is 1.038 g/mL and he specific of NaCl solution is 3.87 J/g-°C, calculate the ΔHneut/mole for the reaction of HCl with NaOH. Assume that no heat is lost to the surroundings. Part A. ) Why are the density...
i just need help on this first question, the others parts are just added information if...
i just need help on this first question, the others parts are
just added information if its needed
1. First, calculate the amount of heat energy, Ical, produced in each reaction using Eq. 1 from the Introduction. Convert Vwater to Mwater using a density value of 1.00 g/mL, and s = 4.18 J/(g•°C). Next, calculate the number of moles of NaNO3 (and NH4Cl) present in each reaction using Eq. 2. Finally, calculate the enthalpy change, AH, for each reaction in...
please help with filling out tables for Parts A and B my data is all laid...
please help with filling out tables for Parts A and B
my data is all laid out
on
the bottom page
equation 5 is
NaOH(s)---->Na+(aq) + OH-(aq)
Calculations and Results Part A: Specific Heat Capacity of a Metal (Assume =41841/ Mass of water 39.7g 67.5°C 5.3°C Temperature change of the metal Temperature change of the water Heat transferred to the water Heat transferred to the metal Specific heat capacity of the metal Approximate molar mass of metal (Eqn 5) Identity...
Please help with all four questions. ? 3.5) Question 7 The pH of a solution of...
Please help with all four questions. ?
3.5) Question 7 The pH of a solution of barium hydroxide is 12.53. How many milliliters of this solution are needed to titrate 125 mL of a solution of 0.0200 M sulfuric acid ? 148 ml 165 mL 73.8 ml 36.9 ml 7.38 x 10 ml Question 8 1.5 p 100-mL of 1.0 M Sr(OH)2 is added to 100 mL of 1.0 M HCl, the pH of the mixture would be - equal...
ANSWER ALL QUESTIONS QUESTION 1 [20 MARKS] Equilibrium constant, Ke for ethanoic acid esterification (CH3COOH) with...
ANSWER ALL QUESTIONS QUESTION 1 [20 MARKS] Equilibrium constant, Ke for ethanoic acid esterification (CH3COOH) with ethanol (C2H5OH) is 4.0 at room temperature. Calculate the composition of the equilibrium mixture if 100 g ethanoic acid, 100 g ethanol and 36 g of water are allowed to achieve equilibrium. (Pemalar keseimbangan, K bagi pengesteran asid etanoik (CH COOH) dengan etanol (CH5OH) ialah 4.0 pada suhu bilik. Hitung komposisi campuran keseimbangan jika 100 g asid etanoik, 100 g etanol dan 36 g...
Lab 9 Heat of Reaction
OBJECTIVE:
To experimentally determine the heat of reaction for two
exothermic reactions.
DISCUSSION:
The heat given off or gained in a reaction is called the heat
of reaction (∆?????????).
A reaction that releases heat is known as an exothermic
reaction; an endothermic reaction
is one that absorbs heat.
The heat of the reaction corresponds to one mole of the
reactant and is expressed in
kilocalories per mole of reactant or in kilojoules per mole of...
my main question here is how much do i need to dilute the 10 M
of NaOH woth water in a flask to get the new molarity needed to
complete this experiment?( ive already mixed 25 ml of the unknown
acid with 0.5 ml of the indicator in the volumetric
flask)
In this activity you will use the virtual lab to determine the concentration of a strong monoprotic acid. To do this, you can perform a titration using NaOH and...
If 1.85 g MgO is combined with enough 1.00 M HCl to make 100.0 mL of solution in a coffee-cup calorimeter, the temperature of the resulting solution increases from 21.3°C to 35.7 °C. Calculate the enthalpy change for the reaction per mole of Mgo. Assume that the specific heat capacity of the solution is 4.18 J/g.K, and the density of the solution is 1.00 g/mL. A 0.704 g of a pure acid, HA, is dissolved in water and an acid-base...
HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(1) 100.0 mL of 0.500 M HCl is mixed with 300.0 mL of 0.100 M NaOH in a coffee cup calorimeter. Assuming the temperature of the solution was initially 25.0 °C, and the final temperature of the solution was 26.7 °C, calculate the enthalpy of this reaction per mole of HCl. Assume the density of the water and acid and base solutions are all 1.00 g/mL.
i just need help on this first question, the others parts are
just added information if its needed
1. First, calculate the amount of heat energy, Ical, produced in each reaction using Eq. 1 from the Introduction. Convert Vwater to Mwater using a density value of 1.00 g/mL, and s = 4.18 J/(g•°C). Next, calculate the number of moles of NaNO3 (and NH4Cl) present in each reaction using Eq. 2. Finally, calculate the enthalpy change, AH, for each reaction in...
please help with filling out tables for Parts A and B
my data is all laid out
on
the bottom page
equation 5 is
NaOH(s)---->Na+(aq) + OH-(aq)
Calculations and Results Part A: Specific Heat Capacity of a Metal (Assume =41841/ Mass of water 39.7g 67.5°C 5.3°C Temperature change of the metal Temperature change of the water Heat transferred to the water Heat transferred to the metal Specific heat capacity of the metal Approximate molar mass of metal (Eqn 5) Identity...
Please help with all four questions. ?
3.5) Question 7 The pH of a solution of barium hydroxide is 12.53. How many milliliters of this solution are needed to titrate 125 mL of a solution of 0.0200 M sulfuric acid ? 148 ml 165 mL 73.8 ml 36.9 ml 7.38 x 10 ml Question 8 1.5 p 100-mL of 1.0 M Sr(OH)2 is added to 100 mL of 1.0 M HCl, the pH of the mixture would be - equal...
ANSWER ALL QUESTIONS QUESTION 1 [20 MARKS] Equilibrium constant, Ke for ethanoic acid esterification (CH3COOH) with ethanol (C2H5OH) is 4.0 at room temperature. Calculate the composition of the equilibrium mixture if 100 g ethanoic acid, 100 g ethanol and 36 g of water are allowed to achieve equilibrium. (Pemalar keseimbangan, K bagi pengesteran asid etanoik (CH COOH) dengan etanol (CH5OH) ialah 4.0 pada suhu bilik. Hitung komposisi campuran keseimbangan jika 100 g asid etanoik, 100 g etanol dan 36 g...
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