Stoichiometry | Test For NTS PPSC FPSC, TEST

Pick out the wrong statement?

A. The integral heat of solution of either component cannot be calculated from heat of mixing
data
B. The average value of heat of neutralisation of dilute solutions of weak acids and bases is much
less compared to that for strong acids and bases
C. The standard heat of solution of the hydrate of a substance is the difference between the heat
of solution of the anhydrous substance and its heat of hydration
D. The accompanying enthalpy change, when a solute is dissolved in solvent, depends upon the
nature & amount of the solute & the solvent, on the temperature & on the initial & final
concentrations of the solution

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Category: Stoichiometry

Which of the following has the least (almost negligible) effect on the solubility of a solute in a solvent ?

Cp – Cv for an ideal gas is equal to________________?

Applicability of Clausius-Clapeyron Equation is subject to the condition that the __________________?

For estimation of heat capacity of a solid compound, one can use________________?

Lower wall courses of soaking pits are made of _____________ bricks to avoid the action of molten slag & scale?

The value of gas constant ‘R’ is ______________ kcal/kg.mole.°C?

Hess’s law of constant heat summation is based on conservation of mass. It deals with ___________________?

1 gm mole of an alcohol whose molecular weight is 74 contains 48 gms of carbon, 10 gms of hydrogen and 16 gms of oxygen. Its molecular formula is__________________?

A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?

Pick out the wrong statement?