
How do you prepare a 1 M solution which has a specific gravity of 1.18? The solution has 35% purity. Calculate the volume required to prepare the solution.
Answer
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Hint 1 M means there is one mole of in 1 L of water because M is the molarity of the solution. First, calculate the moles of in the solution then find the mass of those moles of . 35% purity of the solution means 35 g of is present.
Complete step by step answer:
1 M means there is one mole of in 1 L of water because M is the molarity of the solution. So, for making a solution of 35% purity then we have to first find the number of moles of and since the volume is not specified let us assume a solution is made in 1 L of 1 mol/L .
So, the moles of will be:
Now, we have to find the mass of one mole of : the mass of hydrogen is 1 and the mass of chlorine is 35.5. So, the mass will be:
35% purity of the solution means 35 g of is present. So, the mass of the solution to make the 35% purity will be:
So, the volume required to make the 1 M of solution having the specific gravity of 1.18 will be:
Therefore, the volume required to make the solution is 88 mL.
Note: When we take 88 ml of the concentrated solution, then it must be made up to 1 L of the solution because the molarity of the solution is only measured in the L of the solution.
Complete step by step answer:
1 M
So, the moles of
Now, we have to find the mass of one mole of
35% purity of the
So, the volume required to make the 1 M
Therefore, the volume required to make the solution is 88 mL.
Note: When we take 88 ml of the concentrated solution, then it must be made up to 1 L of the solution because the molarity of the solution is only measured in the L of the solution.
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