Titration Level 3: Errors and Troubleshooting

1. Question

What is a systemic error?

environmental conditions such as wind or heat affecting reactions
Constant error due to issues with instrumentation
An error resulting from a variation in technique
none of the above

2. Question

What is a Random Error?

an error that's random
changes in experimental conditions that can be controlled
changes in experimental conditions that cannot be controlled
I don't pay attention in class enough, I don't know

3. Question

Rinsing conical flask with HCl. What type of error is it?

Random error
Systematic error
fault of student

4. Question

Which is a systemic error in titration?

drops of chemical accidentally dripping in from burette
leaving filter funnel on top of burette
faulty dripping tap of burette
effervescence redissolving in titration

5. Question

If burette is not properly cleaned or rinsed, then it will cause a ________ error.

Systematic
Unsystematic
Random
Personal

6. Question

The correct burette reading is

21.30
22.70
21.3
22.7

7. Question

Too much methyl orange was added to a solution of NaOH in a conical flask

systemic error
random error

8. Question

Methyl orange …

It requires less HCl for titration
It requires more HCl for titration
It does not change titration result

9. Question

Methyl orange …

turns red in acid
turns orange in acid
turns yellow in acid
does not change colour in acid

10. Question

What is the methyl orange colour change from a flask containing NaOH to end point?

red to orange
red to yellow
yellow to orange
orange to red

11. Question

Methyl orange is suitable for use in:

strong acid- strong base
strong acid- weak base
weak acid- strong base
weak acid- weak base