Question

A student working in the molecular biology lab wants to verify the pH of his solution that is supposed to be 8.2. Available standards with the pH meter are standard A (pH 6.8) and standard B (pH 5). When the students measures pH, he gets reading of 6.5 for standard A and 4.7 for standard B. The situation needs him to work smartly with the machine to adjust the exact pH of his solution. In your opinion what are possible ways he could have used to get his work done? Mention all possible ways that he might have used?            ​

Answer 1

Answer:

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A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH.[2] The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode, and so the pH meter is sometimes referred to as a "potentiometric pH meter". The difference in electrical potential relates to the acidity or pH of the solution.[3] The pH meter is used in many applications ranging from laboratory experimentation to