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Students are completing the "Different types of bonding investigation" practical whereby they must conduct various tests to identify unknown chemical samples. The list of chemicals is known but are ot matched up to each of the samples (for example one of the chemicals is HCl but students do not now which one). During their investigation, a group of students have three unknown solutions (A, B and C) and believe hat these samples may be any of the following chemicals. Concentrated hydrochloric acid (HCl) ● Sucrose (a common table sugar with the formula C12H22O11) Copper chloride (CuCl₂) ● ●

Students are completing the "Different types of bonding investigation" practical whereby they must conduct various tests to identify unknown chemical samples. The list of chemicals is known but are ot matched up to each of the samples (for example one of the chemicals is HCl but students do not now which one). During their investigation, a group of students have three unknown solutions (A, B and C) and believe hat these samples may be any of the following chemicals. Concentrated hydrochloric acid (HCl) ● Sucrose (a common table sugar with the formula C12H22O11) Copper chloride (CuCl₂) ● ●

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Answer part e. of this chemistry experiment question

Question 1: Practical analysis (8 marks) Students are completing the "Different types of bonding investigation" practical whereby they must conduct various tests to identify unknown chemical samples. The list of chemicals is known but are not matched up to each of the samples (for example one of the chemicals is HCl but students do not know which one). During their investigation, a group of students have three unknown solutions (A, B and C) and believe that these samples may be any of the following chemicals. Concentrated hydrochloric acid (HCl) Sucrose (a common table sugar with the formula C12H₂2O11) Copper chloride (CuCl₂) Two of the unknown samples are solid powders and the other is clear liquid. The student's deicide to dissolve the two powders in deionized water and measure the conductivity of the three solutions at 2 volts. Below is a summary of their results from this test. Sample A B C Voltage measured at 2V 1.9 1.8 0.2
Transcribed Image Text:Question 1: Practical analysis (8 marks) Students are completing the "Different types of bonding investigation" practical whereby they must conduct various tests to identify unknown chemical samples. The list of chemicals is known but are not matched up to each of the samples (for example one of the chemicals is HCl but students do not know which one). During their investigation, a group of students have three unknown solutions (A, B and C) and believe that these samples may be any of the following chemicals. Concentrated hydrochloric acid (HCl) Sucrose (a common table sugar with the formula C12H₂2O11) Copper chloride (CuCl₂) Two of the unknown samples are solid powders and the other is clear liquid. The student's deicide to dissolve the two powders in deionized water and measure the conductivity of the three solutions at 2 volts. Below is a summary of their results from this test. Sample A B C Voltage measured at 2V 1.9 1.8 0.2
e. The students think that sample C is the sucrose but cannot tell which chemical (HCl or CuCl₂) sample A or B is. Using regular laboratory equipment, materials, and chemicals, propose a test that the students could conduct to identify the chemical sample. Explain how this test can identify the chemicals from each other. (2 marks)
Transcribed Image Text:e. The students think that sample C is the sucrose but cannot tell which chemical (HCl or CuCl₂) sample A or B is. Using regular laboratory equipment, materials, and chemicals, propose a test that the students could conduct to identify the chemical sample. Explain how this test can identify the chemicals from each other. (2 marks)
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