Question

If a healthy man drinks one litre of water on occasion A and one litre of $0.9\%$ saline on occasion B, what shall we expect in two hours?

Answer 1

Drinking water is very necessary as it maintains the balance of our body fluids. It functions including circulation, adsorption, digestion, nutrient transportation or even our b0dy temperature.

Complete answer:
Let’s discuss the question and find the proper answer.
After drinking one litre of water on occasion A, the amount of urine released will be normal in rate. Besides urine, normal volume of sodium ion ($Na^+$) concentration will also be released.
Saline is mainly considered as the aqueous solution of sodium chloride (NaCl). The saline water has the capability to expand the volume of intravascular tissues and thus it does not affect the ion concentration of our body.
When a man drinks one litre of 0.9% saline, the concentration of sodium ion will be increased in his body fluids and thus will mix with the blood. As a result, osmosis will take place in between his body. So when the urine will release there will be no effect of sodium ion and thus water adsorption takes place.

Note: water intoxication becomes a major problem day by day. It may affect our brain and can also cause a coma, seizure or even death. Drinking water is important but not too much. Drinking too much water can increase pressure in our brain and as a result, severe disease can happen or it can become fatal also.