If 9.8 g of sulfuric acid is dissolved in excess quantity of water, it will yield _ moles of hydrogen ion (H+) and _ mole of sulphate ions (SO4-2).
Correct answer: D. 0.2, 0.1
- A. 0.1, 0.2
- B. 0.1, 0.3
- C. 0.2, 0.4
- D. 0.2, 0.1
Explanation
d) 0.2 moles of hydrogen ions (H+) and 0.1 mole of sulfate ions (SO4^2-):Using the same calculation as above, we get:Moles of H+ ions ≈ 0.2 molesMoles of SO4^2- ions ≈ 0.2 moles
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About Moles and Avogadro's Number
The mole connects the microscopic number of particles with measurable mass, using Avogadro's number, 6.022 × 10²³ particles per mole. Questions involve molar mass, conversion between mass, moles and particles, percentage composition, empirical and molecular formulas, and distinguishing atoms, molecules, ions and formula units.
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