KBr is 80 % dissociated in solution. The freezing point of a 0.5 molal solution is `(K_(f) "water" = 1.86^(@)C/m)`

Question

KBr is 80 % dissociated in solution. The freezing point of a 0.5 molal solution is `(K_(f) "water" = 1.86^(@)C/m)`

KBr is 80 % dissociated in solution. The freezing point of a 0.5 molal solution is `(K_(f) "water" = 1.86^(@)C/m)`
A. 273 K
B. 277 K
C. 271.326 K
D. 269 K

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Related Questions

KBr is `180%` dissociated in aqueous solution of `0.5m` concentration. (Given,`K_(f)"for water "=1.86Kkg" mol"^(-1)` ). The solution freezes at

2 Answers 4 Views

n moles of a non volatile solute are dissolved in wg of water. If `K_(f)` is the molal depression constant of water, the freezing point of the solutio

2 Answers 6 Views

If the density of the solvent is 2.5 kg `dm^(-3)` . The 2 molal solution of a solute in this solvent will be molal solution of a solution of a solute

2 Answers 5 Views

The boiling point of 0.1 molal aqueous solution of urea is `100.18 ^(@)C` atm. The molal elevation constant of water is

2 Answers 4 Views

The 0.1 molal aqueous solution of glucose boils at `100. 16^(@)C.` The boiling point of 0.5 molal aqueous solution of sucrose will be

2 Answers 5 Views

Molal depression of freezing point of water is `1.86^(@)` per 100 g of water. 0.02 mole of urea dissolved in 100 g of water will produce a lowering of

2 Answers 5 Views

A `0.50` molal solution of ethylene glycol in water is used as coolant in a car . If the freezing point constant of water is `1.86^(@)` per molal , at

2 Answers 5 Views

A 0.2 molal aqueous solution of weak acid (HX) is 20% ionised. The freezing point of this solution is (Given, `K_(f) = 1.86^(@) C m^(-1)` for water)

2 Answers 5 Views

The solution containing 4g of KBr dissolved in 100 g of water freezes at `- 1.24^(@)C.` The molar mass of KBr is `(K_(f) = 1.86 K kg "mol"^(-1)`

2 Answers 4 Views

The freezing point of water is depressed by `0.37^(@)C` in a 0.01 molar NaCI solution. The freezing point of 0.02 molar solution is depressed by

2 Answers 10 Views

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

Salim Ahmed Kawsar

Correct Answer - C
For KBr,`i = 1 + alpha = 1 + 0.80 = 1.80`
`Delta T_(f) = i K_(f) m = 1.80 xx 1.86 xx 0.5 = 1.674^(@)`
`T_(f) = 273 - 1.674 = 271.326 K.`

5 views Answered 2023-02-05 15:29