CAIE IGCSE Chemistry 7.1.2 Acids in Terms of Their Effect on a Questions
Use methyl orange and thymolphthalein colour changes to identify acidic and alkaline solutions.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- state indicator colours in acids, including methyl orange red and thymolphthalein colourless
- identify thymolphthalein colour in an alkali and a weak acid
- distinguish acid indicator changes from incorrect alkali changes
- use indicator colour evidence to classify an unknown solution
CAIE IGCSE Chemistry 7.1.2 Acids in Terms of Their Effect on a Questions question 1
[Maximum number: 1]
What is the colour of thymolphthalein in dilute hydrochloric acid?
A
blue
B
red
C
yellow
D
colourless
D
All question bank results loaded