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Define some Precautions for Measurement of pH?
1. Never touch the membrane of the glass electrode with anything else except soft tissue paper since it is fragile and is easily ruined if scratched or bumped.
2. The electrodes must not be removed from the solution unless the selector switch is at zero.
3. Never dip the glass electrode in a solution with a dehydrating action.
4. For basic solutions with pH more than 11, glass electrodes of special composition are required to avoid interference due to sodium ion.
5. The glass electrode may be covered with a sleeve to save it from jerks.
The nitrogenase complex is extremely sensitive to inactivation by O2, so the enzyme must be protected from this reactive substance. During the root nodules of legumi
Which of the following is TRUE about the properties of aqueous solutions? Select one: a. A pH change from 5.0 to 6.0 reflects an increase in the hydroxide ion concentration (
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