Purpose: The purpose of this investigation is to test the diagnostic test for different classes of substances as a means of qualitative analysis

Subject:ChemistryPrice:2.87 Bought7

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Purpose: The purpose of this investigation is to test the diagnostic test for different classes of substances as a means of qualitative analysis.

Problem: Which of the following chemicals numbered 1 to 7 is KCl(s), Ba(OH)2 (s), Zn(s) C6H5COOH (s), Ca3(PO4)2(s), C25H52(s) parraffin wax, and C12H22O11(s)?

Table1: Electrical Conductivity

Class    Solid    Liquid   Aqueous  

metal YES YES n/a

nonmetal n/a n/a n/a

ionic n/a YES YES

molecular n/a n/a n/a

acid n/a n/a YES

n/a= no reactions observed

Table 2: Evidence of Solubility, Conductivity, and Litmus Test Results

Chemical   Solubility in water Conductivity of solution Effect of solution on Litmus Paper

1 high none no change

2 high high no change

3 none none no change

4 high high red to blue

5 none none no change

6 none none no change

7 low low blue to red

Which of the following chemicals numbered 1 to 7 is but if some of could not be identified please explain your rationale. 

KCl(s)

Zn(s)

Ba(OH)2 (s)

C6H5COOH (s)

Ca3(PO4)2(s)

C25H52(s) parraffin wax

C12H22O11(s)