Look up the composition of Ringer's solution used in the treat...

Question

Look up the composition of Ringer's solution used in the treatment of burns and wounds.

b. What is the osmolarity of the solution? Is it hypertonic, isotonic, or hypotonic with blood plasma (0.30 osmol)? Discuss possible medicinal reasons for the osmolarity of the solution.

Accepted Answer

Hello. On this problem, we are told the recommended or rehydration solution for treating dehydration caused by diarrhea has the following ingredients. 3.5 g of sodium chloride, 2.5 g of sodium by carbonate. 1.5 g of potassium chloride and 20 g of glucose dissolved in one liter of clean drinking water. In part one, we're asked to calculate the osmolarity of the solution. In part two, we're asked if the approximate ion concentration in the blood plasma is 20.30 osmo is the solution hypertonic isotonic or hypotonic. And in part three, we're asked to provide a reason for the calculated osmolarity of this solution. Beginning with part one, we want to find the osmolarity of the solution. Osmolarity is equal to I times M where I is the ban factor and M is our concentration in terms of polarity. So moles a sou per liter of solution to find the osmolarity of the solution, we have to find the osmolarity for each of the ingredients within the solution. Beginning with sodium chloride, sodium chloride will associate the form. So do you mind and chlorine? So for every one mole of sodium chloride that dissociates, we get two moles of irons. So the van factor is two osmolarity is equal to I times M. So two times the concentration, we have 3.5 g, sodium chloride in every one liter of solution, we make use of the molar mass of sodium chloride to convert from mass to moles. One mole of sodium chloride has a mass of 0.443 g. We set up the molar mass. So our grams of sodium employed cancels osmolarity is equal to 0.1198 cosmo. Our next ingredient is sodium bicarbonate. Sodium bicarbonate will dissociate the form sodium ions and bicarbonate and ions. For every one mole of sodium bicarbonate that dissociates, we get two moles of ions. So the van hop factor is two osmolarity is I. So two times the concentration which is 2.5 g of sodium bicarbonate. For every leader of solution, we make use of the more mass of sodium carbonate to go from mass moles. One mole of sodium carbonate has a mass of 0.7 g. We set up our molar mass. So our grams of sodium by carbonate cancels osmolarity is equal to 0.595 osmo. Our third ingredient is potassium chloride, potassium fluoride will dissociate form potassium ions. Aines. So for every one mole of potassium card that dissociates, we get two moles of ions. So the bad factor is two polarity is I times M. So two times our concentration, we have 1.5 g of potassium chloride and a liter of solution making use of it's more mass to go from mass to moles. One mole of potassium chloride has a mass of 74.551 g. We set up the molar mass. So our grams of potassium chloride cancels. We have a osmolarity of 0.402 osmo. Our last ingredient is glucose. Glucose, then will remain as a molecule in aqueous solution. So it will not dissociate to form multiple particles. So the van hop factor is equal to one polarity then is equal to I times M. So we have one times the concentration. We have 20 g of glucose and a liter of solution. You'll make use of the molar mass of glucose to go from mass to moles. One mole of glucose has a mass of 100 and 0.156 g. We set up our mole mass. So our grams of glucose cancels osmolarity is equal to 0.1110 osmo. So to find the osmolarity of the solution, we add up the osmolarity for each of the components in the solution. The first one is sodium chloride. It has an o of 00.1198. As our next ingredient is Sodi bicarbonate. Osmolarity is 0.5950. And then potassium chloride has osmolarity of 0.402 osmo. And our last ingredient, glucose has an osmolarity of 0.1110 osmo, osmolarity of the solution is equal to 0.33 osmo. So this is our answer to part one, part two asks us to compare the osmolarity of the solution to that of the blood plasma. So the osmolarity of the solution 0.33 osmo is close to that for blood plasma, which is 0.30 osmo. Since the osmolarity of the solution is close to that of the blood plasma, it means that it is isotonic so close to physiological conditions. Part three asks us to explain why we have to calculate osmolarity. That's because to have a isotonic solution means that we will prevent cell damage if we consider what would happen if we had either a hypertonic or a hypertonic solution. So the circle represents a blood cell, if we have a hypotonic solution, that means that it will be lower than physiological. So it will be higher inside the cell. Water will move from a low so concentration area to a high. So it will move inside the cell which will cause the cell to swell and eventually burst. If we have a hypertonic solution, that means that it is higher than physiological. And so water again, moving from a low to a high solute concentration area will move outside the cell. This will cause the cell to shrivel So the osmolarity of the solution is 0.33 osmo. It is close to that for blood plasma of 0.30 osmoles. So that means the solution is isotonic. We want the solution to be isotonic to prevent cell damage. This then corresponds to answer B thanks for watching. Hope this helped.

Look up the composition of Ringer's solution used in the treatment of burns and wounds.
b. What is the osmolarity of the solution? Is it hypertonic, isotonic, or hypotonic with blood plasma (0.30 osmol)? Discuss possible medicinal reasons for the osmolarity of the solution.

Key Concepts

Ringer's Solution Composition

Osmolarity

Tonicity

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