Question

3) The apparatus shown in the following diagram is
Garreau's potometer designed to demonstrate
unequal transpiration from the two surfaces of a
| dorsiventral leaf. Before keeping the leaf in between
the cups, anhydrous calcium chloride (CaCl,)
contained in two small vials were weighed and
placed in both the cups. The ends of the cups were
closed with corks through which two mercury
manometers were connected. After few hours,
CaCl, vials were taken out and weighed again.
CaCI, DIALS -
MERCURY
Caci,
VIALS
(a) What is the purpose of keeping CaCl, vials inside
the cup?​

Answer 1

Answer:

CaCI2 is a hygroscopic that absorbs moisture/water without changing it's state. CaCI2 vials inside the cup is to absorb water.

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Answer 2

Answer:

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