A solution prepared by dissolving 0.8g of naphthalene in 100g of C`Cl_4` has a boiling point elevation of `0.4^@`C. A 1.24g of an unknown solute in same amount of C`Cl_4` produced boiling point elevation of `0.62^@`C, then molar mass of un-known solute is
A) 25g
B) 50g
C) 75g
D) 128g

(a) A solution containing 0.5g of naphithalene in 50g C Cl_(4) yield a boiling point elevation of 0.4K , while a solution of 0.6g of an unknown solute in the same mass of the solvent gives a boiling point elevation of 0.65K . Find the molar mass of the unknown solute. (b) The boiling point of a solution of 0.1g of a substance in 16g of ether was found to be 0.100^(@)C higher that of pure ether. What is the molecular mass of the substance. K_(b) (ether) =2.16K kg "mol"^(-1)

A solution containing 0.52 g of C_(10)H_(8) in 50g CCl_(4) produced an elevation in boiling point of 0.402^(@)C . On the other hand a solution of 0.62 g of an unknown solute dissolved in same amount of CCl_(4) produced an elevation of 0.65^(@)C . Molecular mass of solute is :

A solution containing 0.2563 g of naphthalene (molecular mass = 128) in 50 g of carbon tetrachloride yields a boling point elevation of 0.201^(@)C while a solution of 0.6216 g of an unknown solute in the same mass of the solvent gives a boiiling point elevation of 0.647^(@)C . Find the molecular mass of unknown solute.

A solution is prepared by dissolving 1.0g of NaOH in water to get 250 ml of solution. Calculato its molarity.

When 10 of a non-volatile solute is dissolved in 100 g of benzene . It raises boiling point by 1^(@)C then moles mass of the solute is ______.

A solution of sucrose (molar mass =342) is prepared by dissolving 68.4 g in 1000 g of water. Calculate The boiling point of solution.

Solution A is obtained by dissolving 1 g of urea in 100 g of water and solution B is obtained by dissolving 1 g of glucose in 100 g of water. Which solution will have a higher boiling point and why?

A solution containg 12 g of a non-electrolyte substance in 52 g of water gave boiling point elevation of 0.40 K . Calculate the molar mass of the substance. (K_(b) for water = 0.52 K kg mol^(-1))

A solution containing 12.5 g of non-electrolyte substance in 185 g of water shows boiling point elevation of 0.80 K. Calculate the molar mass of the substance. ( K_b=0.52 K kg mol^(-1) )

A solution of sucrose (molar mass =342) is prepared by dissolving 68.4 g in 1000 g of water. Calculate The freezing point of solution.