In a solution of 1 mole of solute B in 3 moles of solvent A, what is the mole fr

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Question: In a solution of 1 mole of solute B in 3 moles of solvent A, what is the mole fraction of solvent A?

Options:

Correct Answer: 0.75

Solution:

Mole fraction of A = moles of A / (moles of A + moles of B) = 3 / (3 + 1) = 0.75.

In a solution of 1 mole of solute B in 3 moles of solvent A, what is the mole fraction of solvent A?

In a solution of 1 mole of solute B in 3 moles of solvent A, what is the mole fraction of solvent A?

Step 1: Identify the number of moles of solute B, which is given as 1 mole.
Step 2: Identify the number of moles of solvent A, which is given as 3 moles.
Step 3: Calculate the total number of moles in the solution by adding the moles of A and B together: 3 moles of A + 1 mole of B = 4 moles total.
Step 4: Calculate the mole fraction of solvent A using the formula: mole fraction of A = moles of A / total moles.
Step 5: Substitute the values into the formula: mole fraction of A = 3 / 4.
Step 6: Simplify the fraction: 3 / 4 = 0.75.

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