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During the experiment, the student measured the varying pH levels using a digital pH meter - VCE - SSCE Biology - Question 8 - 2017 - Paper 1
Question 8
During the experiment, the student measured the varying pH levels using a digital pH meter. The student calibrated the meter using a pH 7 buffer solution. The reaso... show full transcript
Worked Solution & Example Answer:During the experiment, the student measured the varying pH levels using a digital pH meter - VCE - SSCE Biology - Question 8 - 2017 - Paper 1
Step 1
The reason the student calibrated the pH meter was to:
Answer
The student calibrated the pH meter to allow the pH to be measured accurately (option D). Calibration ensures the meter provides reliable and precise measurements, which is essential for any scientific experiment involving pH levels. By using a standard solution like the pH 7 buffer, the student establishes a reference point, reducing potential discrepancies in measurements.