How many grams of sucrose, CiH 2011. must be dissolved in 750 mL of water to prepare a 0.250 molar solution? a. 64.1 g C. 85.5 g e. 96.49 b. 114 g d. 78.2 g

Question

Kathryn Dickerson

Chemistry

23 November, 02:05

How many grams of sucrose, CiH 2011. must be dissolved in 750 mL of water to prepare a 0.250 molar solution? a. 64.1 g C. 85.5 g e. 96.49 b. 114 g d. 78.2 g

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Answers (1)

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Blaine Lee · Answer 1

a) g C12H22O11 = 64.1 g

Explanation:

[ ] sln = 0.25 mol/L

V sln = 0.750 L

∴ Mw C12H22O11 = 342.3 g/mol

⇒ mol C12H22O11 = 0.25 mol/L * 0.750 L = 0.1875 mol C12H22O11

⇒ g C12H22O11 = 0.1875 mol * 342.3 g/mol

⇒ g C12H22O11 = 64.18 g