What is the molality of ethyl alcohol (molar mass = 46) in aqueous solution which freezes at `-10^(@)C`: `K_(f)`for water = `1.86 K "molality"^(-1)`

Question

What is the molality of ethyl alcohol (molar mass = 46) in aqueous solution which freezes at `-10^(@)C`: `K_(f)`for water = `1.86 K "molality"^(-1)`

What is the molality of ethyl alcohol (molar mass = 46) in aqueous solution which freezes at `-10^(@)C`:
`K_(f)`for water = `1.86 K "molality"^(-1)`
A. `3.540`
B. 4.567
C. 5.376
D. 6.315

Monjur Alahi

10 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
`Delta T_(f) = K_(f) xx m,`
`:.10 = 1.86 xx m ` or ` m=5.376`

10 views Answered 2023-02-05 15:29