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CHE1505 Assignment 03 2024
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CHE1505 Assignment 03 2024
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CHE1505 Assignment 05 2024 (due date 22 August )
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CHE1504 Assignment 05 2024
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UNISA 2024 CHE1505-24-Y Welcome Message Assessment 3QUIZ
Started on Friday, 28 June 2024, 5:16 PM
State Finished
Completed on Friday, 28 June 2024, 5:49 PM
Time taken 33 mins 30 secs
Question 1
Complete
Marked out of 2.00
A universal indicator can indicate the full range of pH values on the pH scale by
colour changes. Acid changes the colour of the universal indicator towards:
a. yellow, orange and red colours
b. yellow, green and blue colours
c. White, blue and black colours
d. green, blue and purple colours
Question 2
Complete
Marked out of 2.00
Whose definition of acids and bases emphasizes the role of an electron pair?
a. Lewis
b. Bronsted-Lowry
c. Faraday
d. Arrhenius
Question 3
Complete
Marked out of 2.00
Which of the following compounds cannot be Bronsted-Lowry bases?
a. NH3
b. NH4+ A
-
c. SH
d. H2O
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