The solubility of sodium selenate is 84g/100g of water at 35 degrees Celsius. If solution is obtained by dissolving 42g of sodium selenate in 50g of water at 35 degrees Celsius. What do you call this solution
42 g in 50 g H2O is 84 g in 100 g H2O so the solution is saturated.
To determine what this solution is called, we need to compare the amount of solute (sodium selenate) in the solution to the maximum amount of solute that can dissolve in water at that temperature (35 degrees Celsius).
The solubility of sodium selenate is given as 84g/100g of water at 35 degrees Celsius. This means that at this temperature, you can dissolve a maximum of 84g of sodium selenate in 100g of water.
In our case, we dissolved 42g of sodium selenate in 50g of water at 35 degrees Celsius. To determine what this solution is called, we need to compare the amount of solute (42g) to the maximum amount of solute that can dissolve (84g).
The concentration of the solution can be represented as a fraction:
Concentration = Amount of Solute (42g) / Maximum Amount of Solute (84g)
Simplifying this fraction:
Concentration = 0.5
The concentration of the solution is 0.5, which is equal to 50%. So, we can call this solution a "50% sodium selenate solution".
The solution obtained by dissolving 42g of sodium selenate in 50g of water at 35 degrees Celsius can be called a saturated solution.
To understand why it is called a saturated solution, we need to compare the amount of solute (sodium selenate) dissolved in the solvent (water) with its maximum solubility at that temperature.
Given that the solubility of sodium selenate is 84g/100g of water at 35 degrees Celsius, it means that 100g of water can dissolve 84g of sodium selenate.
Now, if we have 50g of water and it can dissolve 84g of sodium selenate, then we can calculate the maximum amount of sodium selenate that can dissolve in 50g of water using the following proportion:
(84g/100g) = (x/50g)
Cross-multiplying, we get:
100 * x = 84 * 50
x = (84 * 50) / 100
x = 42g
So, 50g of water can dissolve a maximum of 42g of sodium selenate at 35 degrees Celsius. Since the actual amount of sodium selenate dissolved in this case is also 42g, the solution is fully saturated. Hence, it is called a saturated solution.