If a piece of dry COCl_2 paper is placed on t | vedclass

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(C) Cobalt chloride $(COCl_2)$ paper is a chemical indicator used to detect the presence of moisture. When dry,$COCl_2$ paper is blue in color. As wat

Vedclass · Accepted Answer

Transpiration makes the paper moist

Vedclass · Answer

(C) Cobalt chloride $(COCl_2)$ paper is a chemical indicator used to detect the presence of moisture. When dry,$COCl_2$ paper is blue in color. As water vapor is released from the leaf through the process of transpiration,the paper absorbs this moisture. The reaction between the anhydrous $COCl_2$ and water results in the formation of hydrated cobalt chloride,which is pink in color. Since the lower epidermis of a leaf contains a higher number of stomata,the rate of transpiration is higher there,causing the color change to occur more rapidly.

If a piece of dry $COCl_2$ paper is placed on the lower epidermis of a leaf,the color changes from blue to pink because...

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