In a colloid osmometer, what is the purpose of coupling the saline chamber to a pressure detector?

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Multiple Choice

In a colloid osmometer, what is the purpose of coupling the saline chamber to a pressure detector?

In a colloid osmometer, the osmotic pressure is determined by the pressure needed to stop solvent flow across a semipermeable membrane. Connecting the saline chamber to a pressure detector allows that hydrostatic pressure difference to be measured precisely and then translated into an electrical signal. This conversion provides a quantitative, easy-to-record readout of osmotic pressure that can be displayed and analyzed with instruments. The other ideas aren’t the main function here. Balancing the pressure to equalize sides is part of the measurement process, but the detector’s role is to sense the resulting pressure and convert it to a readable electrical output. The membrane doesn’t move only solute; water moves across the membrane due to osmotic forces, and the detector doesn’t change that behavior—it just measures the pressure needed to counter it.

In a colloid osmometer, the osmotic pressure is determined by the pressure needed to stop solvent flow across a semipermeable membrane. Connecting the saline chamber to a pressure detector allows that hydrostatic pressure difference to be measured precisely and then translated into an electrical signal. This conversion provides a quantitative, easy-to-record readout of osmotic pressure that can be displayed and analyzed with instruments.

The other ideas aren’t the main function here. Balancing the pressure to equalize sides is part of the measurement process, but the detector’s role is to sense the resulting pressure and convert it to a readable electrical output. The membrane doesn’t move only solute; water moves across the membrane due to osmotic forces, and the detector doesn’t change that behavior—it just measures the pressure needed to counter it.

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