# New information · after first collection

Each page below is released only after its matching first response has been captured. Keep first and later work separately labelled. Review your conclusion; retaining an already careful statement is a valid decision when you explain why.


## E later page · A changed pouch condition

### Complete later source E

In E's first pouch scenario, inside solute was 0.40 mol/L and outside 0.15 mol/L. Water could cross, solute could not, and initial temperature and pressure were equal. Those conditions supported an initial net inward water prediction.

Now consider a second scenario with the same concentrations and permeability and equal temperature, but **hydrostatic pressure on the two sides is unknown and may differ**. It is no longer supplied as equal. No full water-potential values are given. U and V's transport file and the membrane display are unchanged; the later scenario concerns only the pouch.

### Complete later task E

Write a second response about the pouch. Say which conclusion was supported in the first scenario. For the new pressure-unknown scenario, decide whether the concentration-only inward arrow is certain, conditional or unresolved. Explain your judgement using water potential and name the additional information needed. State one result from the earlier U/V or membrane explanation that remains supported. Do not erase the first response or describe its stated equal-pressure conclusion as an error merely because the scenario changed.