Answer to Question #198428 in General Chemistry for Lee Lucero

Question

Use the data from the first video to complete this report.

A. Schematic Diagram

 

 

 

B. Chemical Equations involved in the reaction

1. Reaction of hydrochloric acid with Calcium carbonate in eggshell

 

2. reaction of NaOH with excess HCl

 

 

C. Data and Results

 

[HCl] = ______________ 

[NaOH]= ____________ 

Answers with calculation:

Mass of Ground Eggshell sample

Volume of HCl added

 

Moles of HCl used in titration (initial)

 

NaOH, Initial buret reading

 

NaOH, final buret reading

 

Volume of NaOH used

 

Moles of NaOH used to react with HCl

 

Moles of HCl used to react with NaOH (excess)

 

Moles of HCl used to react with CaCO₃ in eggshell

 

Moles of CaCO₃ reacted with HCl

 

Mass of CaCO₃ reacted in grams

 

Percentage of CaCO₃ in eggshell sample

 

this is the youtube link https://youtu.be/QY4UvtM_xRE

Answer 1

A. Schematic Diagram

B.1.CaCO3+2 HCl -> CaCl2 + CO2 + H2O

2. HCl+NaOH→H2O+NaCl.

C. [HCl] = 2.84M

[NaOH]=9.83M