Question:
Mole fraction of H$_2$SO$_4$ in aqueous solution is 0.9. Find mass % of H$_2$SO$_4$. (H=1, S=32, O=16 u)
Mole fraction of H$_2$SO$_4$ in aqueous solution is 0.9. Find mass % of H$_2$SO$_4$. (H=1, S=32, O=16 u)
Show Hint
Convert mole fraction to moles, then calculate masses, finally use mass percent formula.
Updated On: Oct 27, 2025
- 90
- 85
- 98
- 80
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Mole fraction $x_\text{H2SO4}=0.9$. Let 1 mole solution → 0.9 mol H$_2$SO$_4$, 0.1 mol H$_2$O. Mass H$_2$SO$_4$ = $0.9\times 98 = 88.2$ g, mass H$_2$O = $0.1 \times 18 = 1.8$ g. Mass % = $88.2/90 \times 100 \approx 98%$.
Was this answer helpful?
0
0
Top Questions on Solutions
- Elements A and B form two non-volatile compounds (AB$_2$ and AB$_4$). When 1 g of AB$_2$ is added to 20 g of C$_6$H$_6$ (molar mass =78 gmol$^{-1}$) the freezing point of C$_6$H$_6$ is lowered by 2.3 K. When 1 g of AB$_4$ is added to 20 g of C$_6$H$_6$, the freezing point of C$_6$H$_6$ was lowered by 1.3 K. The atomic masses of A and B are respectively (K$_f$(C$_6$H$_6$)=5.1 K kg mol$^{-1}$)
- Give reasons:
(a) Cooking is faster in a pressure cooker than in an open pan.
(b) On mixing liquid X and liquid Y, volume of the resulting solution decreases. What type of deviation from Raoult's law is shown by the resulting solution? What change in temperature would you observe after mixing liquids X and Y? Observe the following data given in the table. (\(K_H\) = Henry's law constant)
Gas CO₂ Ar HCHO CH₄ \(K_H\) (k bar at 298 K) 1.67 40.3 \(1.83 \times 10^{-5}\) 0.413 The correct order of their solubility in water is
- Density of 3 M NaCl solution is 1.25 g/mL. The molality of the solution is:
- 5 moles of liquid X and 10 moles of liquid Y make a solution having a vapor pressure of 70 torr. The vapor pressures of pure X and Y are 63 torr and 78 torr, respectively. Which of the following is true regarding the described solution?
View More Questions
Questions Asked in TS EAMCET exam
In a messenger RNA molecule, untranslated regions (UTRs) are present at:
I. 5' end before start codon
II. 3' end after stop codon
III. 3' end before stop codon
IV. 5' end after start codon- TS EAMCET - 2025
- Plant Ecology
- What are X, Y, Z respectively in the following reaction sequence?
CH$_3$CH=CHCH$_3$ $\xrightarrow{X}$ CH$_3$COOH $\xrightarrow{Y}$ CH$_3$CO-Cl $\xrightarrow{Z, C6H5NH2}$ C$_6$H$_5$NHCOCH$_3$- TS EAMCET - 2025
- Aldehydes, Ketones and Carboxylic Acids
- What are X and Y respectively in the following set of reactions?
- TS EAMCET - 2025
- Carboxylic Acids
- An alcohol X (C$_4$H$_{10}$O) reacts with Conc.HCl/ZnCl$_2$ to give corresponding chloride. X on dehydration forms Y, which reacts with Baeyer's reagent to give Z. What is Z?
- TS EAMCET - 2025
- Alcohols, Phenols and Ethers
- Identify the sets containing correct order against the property mentioned from the following
- TS EAMCET - 2025
- Aldehydes, Ketones and Carboxylic Acids
View More Questions