In a heat of neutralization lab experiment, why do the temperatures of the acid and base...

In a heat of neutralization lab experiment, why do the temperatures of the acid and base must be the same? What happens if they are not the same?

Expert Solution

In a heat of neutralization lab experiment the temperatures of the acid and base must be the same because the calculation of the heat of neutralization is dependent on the temperature change of the reaction mixture. so when the temerature of the acid and base solution are same then the after mixing the solutions the resultant solution must have the same temperature and when reaction happens and heat is produced by the reaction then the temperature of the reaction mixture will increase. and this will give the correct temperature change value for the solution.

If the temperatures of the acid and base solutions are not same then after mixing the equilibrium temperature will be different and the reaction mixture will not show the correct temperature change after the reaction completion. This will lead to incorrect calculations of the heat of neutralization.

That's why the temperatures of the acid and base solutions in the heat of neutralization lab experiment must be same unless it will give incorrect results.

queen_honey_blossom answered 1 year ago

Vapor pressure of a pure liquid lab experiment Why is the value of the heat of...

Vapor pressure of a pure liquid lab experiment Why is the value of the heat of vaporization for sucrose greater than water? comment on the effect of a non-electrolyte such as sucrose on the vapor pressure and delta vap H. What can be the possible systematic source of error in this experiment?

common laboratory reaction is the neutralization of an acid with a base. When 50.0 mL of...

common laboratory reaction is the neutralization of an acid with a base. When 50.0 mL of 0.200 M HCl at 25.0° C is added to 50.0 mL of 0.200 M KOH at 25.0° C in a coffee cup calorimeter, the temperature of the mixture rises to 26.4° C. What is the heat of reaction per mole of acid? Assume the mixture has a specific heat capacity of 4.18 J/(g·K) and that the densities of the reactant solutions are both 1.00...

When a strong acid is neutralized by a weak base is the neutralization complete? Write the...

When a strong acid is neutralized by a weak base is the neutralization complete? Write the neutralization reaction for HClO4 and NH3. What is the value of Kn (equilibrium constant for neutralization)? (Kb(NH3)=1.810‒5) If stoichiometric amounts of acid and base are reacted will the resulting solution be acidic, basic or neutral?

This is a Lab Report about an experiment. The experiment should be about HEAT and TEMPERATURE...

This is a Lab Report about an experiment. The experiment should be about HEAT and TEMPERATURE with any example. Title: Hypothesis: Statement that the experiment is going to test, prove, or disprove. What is the point of the experiment? (Make a statement that the experiment will either prove or disprove.) Overview: Brief summary of what occurred in the experiment or what was tested and how. Uncertainty&Error: Can you trust your data? Considerations: 1) What factors may have affected or biased...

Stoichiometry of an Acid–Base Reaction Experiment 1: Prepare a Sodium Carbonate Solution Lab Results Record the...

Stoichiometry of an Acid–Base Reaction Experiment 1: Prepare a Sodium Carbonate Solution Lab Results Record the following masses. a mass of empty beaker (g) 85.000 g b mass of beaker plus Na2CO3 (g) 87.000 g c mass of Na2CO3 (g) 2.206 g Data Analysis Convert the mass of Na2CO3 to moles, given its molar mass (MM) of 105.989 g/mol. 2.206 g / 105.989 g/mol = 0.0208 mol Experiment 2: Neutralization Reaction Lab Results What was the acid in the reaction?...

I have a few questions from a lab experiment that my class has done for Acid-Base...

I have a few questions from a lab experiment that my class has done for Acid-Base Titrations. Objective: To use titration to determine in Part 1, the concentration (molarity) of an unknown acid solution and in Part 2, the purity of a sample of KHP acid. Background: Titration is a volumetric technique used to determine the concentrations of solutions, molar masses of solids, and purity of samples. A titration inolves the addition of a titrant (a solution of known concentration)...

Lab Experiment 9 Acid‐Base I – Titration 1. Define and explain titration. 2. In the experimental...

Lab Experiment 9 Acid‐Base I – Titration 1. Define and explain titration. 2. In the experimental procedure, the buret is prepared by pre‐rinsing with NaOH and discarding the rinse. Explain the purpose of pre‐rinsing the buret with NaOH solution and identify what errors might be introduced if prerinsing is not performed before a titration.

The following questions relate to the acid-base neutralization of HCl and NaOH HCl (aq) + NaOH...

The following questions relate to the acid-base neutralization of HCl and NaOH HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l) a. A 25.00 mL sample of HCl is titrated with 0.1045 M NaOH using phenolphthalein as an indicator. The buret containing NaOH initially reads 0.30 mL and reads 48.29 mL at the end point. Determine the concentration of the HCl solution in mol/L. Show ALL work. b. If 50.0 mL of 0.500 M HCl at 25.0°C is...

Post-lab: Neutralization Power of an Antacid 1) This experiment used the technique of back titration. Describe...

Post-lab: Neutralization Power of an Antacid 1) This experiment used the technique of back titration. Describe the process of back titration in 2-3 sentences. Why is back titration used instead of directly titrating a solution of antacid with 0.15 M HCl? 2) Phenolphthalein is an indicator which turns a pink color at a pH of 8.3. In this experiment, phenolphthalein is added to the antacid solution to indicate the equivalence point of the back titration. Phenolphthalein solution by itself is...

Identify the Bronsted--Lowry acid and base in the following neutralization reaction: NaCN (aq) + HBr (aq)...

Identify the Bronsted--Lowry acid and base in the following neutralization reaction: NaCN (aq) + HBr (aq) ---> NaBr (aq) + HCN (aq)

Question