Calculate the boiling point sollution when 2 g of `Na_(2)SO_(4) (M=142 g mol^(-1)`) was dissoved in 50 g of water assuming that `NaSO_(4)` undergoes c

Question

Calculate the boiling point sollution when 2 g of `Na_(2)SO_(4) (M=142 g mol^(-1)`) was dissoved in 50 g of water assuming that `NaSO_(4)` undergoes c

Calculate the boiling point sollution when 2 g of `Na_(2)SO_(4) (M=142 g mol^(-1)`) was dissoved in 50 g of water assuming that `NaSO_(4)` undergoes complete ionization (`K_(b)` for water = 0.52 K kg `mol^(-1)`)

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

Related Questions

given `NO(g)+O_(3)(g)toNO_(2)(g)+O_(2)(g) " "DeltaH=198.9kJ//mol` `O_(3)(g)to3//2O_(2)(g) " " DeltaH=-142.3 kj//mol` `O_(2)(g)to2O(g) " " DeltaH=+495.

2 Answers 6 Views

Assertion : Oxidation of `Na_(2)SO_(3)` is not caused by air but in the presence of `Na_(3)AsO_(3).` Reason : `Na_(3)AsO_(3)` can be oxidised by air.

2 Answers 6 Views

`SO_(3) (g)` is produced as : `SO_(2) (g) + (1)/(2) O_(2) (g) hArr SO_(3) (g)` At `900 K, 0.2 `mol of `SO_(2)` and 0.4 mol of `O_(2)` are taken in 2L

2 Answers 10 Views

The freezing point of pure nirobenzene is 278.8 K. When 2.5 g of an unknown substance is dissoved in 100 g of introbenzene, the freezing point of the

2 Answers 4 Views

When 1.5 g of a non-volatile solute was dissoved in 90 g of benzene, the boiling point of benzene was raised from `353.23^(-1)` K to 353.93 K. Calcula

2 Answers 6 Views

Calculate the boiling point elevation for a solution prepared by adding 10 g of `CaCI_(2)` to 200 g of water. (`K_(b)` for water = 0.512 K kg mol, Mol

2 Answers 5 Views

Calculate the mass of NaCI (molar mass =58.5 g `mol^(-1)`) to be dissoved in 37.2 g of water to lower the freezing point by `2^(@)C` assuming that NaC

2 Answers 5 Views

A 1.0 g of substance of molecular formula `AB_(2)`when dissoved in 25 g of benzene reduced the freezing point by `1.25^(@)C`, Determine the atomic mas

2 Answers 8 Views

For a `0.072 M NaSO_(4)` solution,select the incorrect option(s):`(K_(a_(1))` and `K_(a_(2))` of `H_(2)SO_(4)=oo` & `1.2xx10^(-2))`

2 Answers 5 Views

Given `8Kl(aq)+5H_(2)SO_(4)(aq)rarr4K_(2)SO_(4)(aq)+4I_(2)(g)+H_(2)S(g)+4H_(2)O(g)` 16 mol of KI reacts with 12 mol of `H_(2)SO_(4)`. The total volume

2 Answers 5 Views

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

Correct Answer - 373.44 K
Step I. Calculation of elecation in b.p. temperature
`Na_(2)SO_(4)" dissociates in aqueous solution as ":`
`Na_(2)SO_(4)(s)overset(("aq"))to2Na^(+)("aq")+SO_(4)^(2-)("aq")`
`i=3, W_(B)==2g, M_(B)=142"g mol"^(-1), W_(A)=50g=0.050 kg`
`K_(b)=0.52" K kg mol"^(-1)`
`DeltaT_(b)=ixxK_(b)xxm=(xx(0.52" K kg mol"^(-1))xx(2g))/((142" g mol"^(-1))xx(0.050" kg "))=0.44 K`
Step II. `"Calculation of boilling point of solution" (T_(b))`
`T_(b)=T_(b)^(@)+DeltaT_(b)=373 K+0.44 K=373.44 K`