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Factors Affecting Boiling Point

ntQ.3n ntA wa...

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ntQ.3n ntA water sample contains 9.5% MgCl2and 11.7% NaCl (by weight). Assuming 80% ionisation of each salt. Boiling point of water will be approximately (Kb= 0.52)n

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Q. Sea water is found to contain 5.85% NaCl and 9.50%

M g C l_{2}

by weight of solution. Calculate it's boiling point assuming 80% ionisation for NaCl and 50% ionisation of

M g C l_{2}

(K_{b} (H_{2} O)

Q. Sea water is found to contain 5.85 per NaCl and 9.50 per

M g C l_{2}

by weight of solution. Calculate its normal boiling point assuming 80 per ionisation for NaCl and 50 per ionisation of

M g C l_{2} [M_{b} (H_{2} O) = 0.51 k g m o l^{- 1} K]

.

Q. River water is found to contain

11.7 %

N a C l

9.5 %

M g C l_{2}

8.4 %

N a H C O_{3}

by weight of solution. Calculate its normal boiling point assuming

90 %

N a C l

70 %

M g C l_{2}

50 %

N a H C O_{3}

K_{b}

= 0.52

m o l^{- 1}

Q. Sea water is

3.5

% by mass of common salt and has a density

1.04 g

{c m}^{- 3}

298 K

. Assuming the salt to be sodium chloride, then osmotic pressure of sea water will be: (assume complete ionisation of the salt)

Q. A sample of industrial waste water is found to contain 8.2%

N a_{3} P O_{4}

M g S O_{4}

by weight in solution. If % ionisation of

N a_{3} P O_{4}

M g S O_{4}

are 50% and 60% respectively, then its normal boiling point (in °C ) is (2 decimal places).
[use

K_{b} (H_{2} O)

K k g m o 1^{-} 1

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