N a solution we have 2 mol of substance a. 2 mol of substance b, and 7 mol of substance c. find the mole fraction of substance c?
Answers
Question :
In a solution,we have 2 moles of substance A,2 moles of substance B and 7 moles of substance C. Find the Mole Fraction of substance C
Answer :
Mole Fraction of substance C is 0.63
There are,
- 2 moles of substance A
- 2 moles of substance B
- 7 moles of substance C
We have to find the Mole Fraction of substance C
Firstly,we would need to calculate the number of moles of solution.
No.of Moles of Solution = 2 + 2 + 7
No.of Moles of Solution = 11
Mole Fraction is given as :
Now,
☆ Given:
⇏ In a solution we have 2 mol of substance A, 2 mol of substance B and 7 mol of substance V.
☆ Find:
⇏ Find the mole fraction of substance C.
☆ According to the question:
⇏ 2 moles = A
⇏ 2 moles = B.
⇏ 7 moles = C.
☆ We know that:
⇏
⇏
⇏
⇏
Therefore, 0.63 is the mole fraction of substance C.
☆ ADDITIONAL EXPLANATION:
⇏ According to the question we must find the mole fraction for substance C so to find the mole fraction we must add the other moles of substance A, B. So,
We get our answer,