A gas ‘Y’ is formed when a yellowish powder ‘X’ is heated in presence of oxygen . A liquid
‘Z’ is formed when ‘Y’ is dissolved in water and its nature is tested using litmus papers .
(i) Identify X , Y and Z .
(ii) Write the chemical equations for both the reactions .
(iii) What is the chemical nature of liquid ‘Z’.
Answers
Answer:
Absorption of ingested water and most solutes occurs in the proximal small intestine, therefore the rate at which beverages are emptied from the stomach is an important factor in determining the rate of water absorption. In the small intestine, water absorption is brought about by the creation of suitable osmotic gradients that promote net uptake of water from the intestinal lumen. The absorption of solute, especially that brought about by active carriers, are highly effective in creating the osmotic gradients that promote net water uptake. The activation of these transporters also increases the permeability of the mucosa which helps absorption. Moderate hypotonicity of the luminal contents potentiates solute-induced water absorption while hypertonicity slows fluid absorption. Dilute hypotonic glucose-sodium solutions are highly effective oral rehydration1q.The
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