Water (LC 2026) (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
ShowHide
Practise the questions
13 questions from this quiz
What is an acid-base indicator?
What is an acid-base indicator?
A weak acid/base that changes color with pH
What color is litmus in an acidic solution?
What color is litmus in an acidic solution?
Red
What is the pH range for methyl orange?
What is the pH range for methyl orange?
3-5
What color is phenolphthalein in a basic solution?
What color is phenolphthalein in a basic solution?
Pink
Which indicator is suitable for a weak acid vs. strong base titration?
Which indicator is suitable for a weak acid vs. strong base titration?
Phenolphthalein
In the equation , what causes the color change?
In the equation , what causes the color change?
Different colors of and
What happens to the indicator equilibrium when acid is added?
What happens to the indicator equilibrium when acid is added?
Shifts left, more forms
What happens when base is added to an indicator solution?
What happens when base is added to an indicator solution?
decreases, equilibrium shifts right
What must be considered when choosing an indicator for titration?
What must be considered when choosing an indicator for titration?
pH at endpoint & indicator's pH range
What does a titration curve show?
What does a titration curve show?
How pH changes as titrant is added
What pH range does the equivalence point cover in strong acid vs. strong base titration?
What pH range does the equivalence point cover in strong acid vs. strong base titration?
~3 to ~10
Which indicator suits a strong acid vs. weak base titration?
Which indicator suits a strong acid vs. weak base titration?
Methyl orange
Is there a suitable indicator for weak acid vs. weak base titrations?
Is there a suitable indicator for weak acid vs. weak base titrations?
No suitable indicator exists