HARD
12th ICSE
IMPORTANT
Earn 100

Explain why some of the non-ideal solutions show positive deviations, while some others show negative deviations from ideal behaviour. 

Important Questions on Solutions

MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.33
Benzene and toluene form nearly ideal solution. At 313 K, the vapour pressure of pure benzene is 150 mm Hg and of pure toluene is 50 mm Hg. Calculate the vapour pressure of a mixture of these two containing their equal masses at 313 K. 
HARD
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.34
Benzene (C6H6) and toluene (C6H5CH3) form an ideal solution. At 313 K, the vapour pressures of pure benzene and toluene are 160 mm Hg and 60 mm Hg respectively. Calculate the partial pressures of benzene and toluene, and the total pressure of the solution when equal masses of benzene and toluene are mixed at 313 K.
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.34
Benzene (C6H6) and toluene (C6H5CH3) form an ideal solution. At 313 K, the vapour pressures of pure benzene and toluene are 160 mm Hg and 60 mm Hg respectively. Calculate the partial pressures of benzene and toluene, and the total pressure of the solution when equal moles of benzene and toluene are mixed at 313 K.
HARD
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.34
Benzene (C6H6) and toluene (C6H5CH3) form an ideal solution. At 313 K, the vapour pressures of pure benzene and toluene are 160 mm Hg and 60 mm Hg respectively. Calculate the partial pressures.of benzene and toluene, and the total pressure of the solution when 1 mole of benzene and 4 moles of toluene are mixed at 313 K.
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.35
Methanol and ethanol form a nearly ideal solution at 300 K. A solution is made by mixing 32 g of methanol and 23 g of ethanol at 300 K. Calculate the partial pressures of its constituents and the total pressure of the solution (At 300 K, p0=90 mm Hg, p0C2H5OH=51 mm Hg).
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.36
The vapour pressures of benzene and toluene at 20°C are 75 mm and 22 mm Hg respectively. 23.4 g of benzene and 64.4 g of toluene are mixed. If the two form an ideal solution, calculate the mole fraction of benzene in vapour phase when vapours are in equilibrium with the liquid phase. 
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.37
At 25°C, the vapour pressure of water is 23.75 mm Hg. Calculate the vapour pressure at the same temperature of 5% aqueous solution of urea (NH2CONH2). 
MEDIUM
12th ICSE
IMPORTANT
ICSE Chemistry>Chapter 2 - Solutions>REVIEW EXERCISES>Q 2.38
The vapour pressure of water at 20°C is 17 mm Hg. Calculate the vapour pressure of a solution containing 6 g of glucose in 50 g of water.