Question

Part A Explain why chemists conducting quantitative work using liquid solutions prefer to express concentration in terms of molality rather than molarity. Match the items in the left column to the appropriate blanks in the sentences on the right. Reset Help less is independent of The molality of a solution is the preferred unit because it P and T. is a conserved quantity, independent of temperature and pressure. , however, changes as T or P are varied because the thermal expansion coefficient and the isothermal compressibility are . Moles per kilogram is thus a useful concentration unit than not zero more moles per liter, because the latter with the thermodynamic state. The volume The mass of a substance zero does not change depends on changes

Answer 1

PARTA Molarity : solute qt is present defined as the moles of in Ber liter of solution. Molarity s unite moles of solute volume of solution (in y 3 mol/l gm Molality :- t is solute present in gedro. Solvent. defined as the moles of fer tag kilogram (kg) of molality a unit :) moles of solute mass of selvent (in kg) mallkg or 'm'

is of Independent of " The mass a substance 11) The volume ) not zero. vy more vis does not change. note ö- moles & mass does not change the temperature (I) er Brossure (p.) changes an changing the T & p. with changing but volume u depend on temperatured molality does not Pressure Molarity depend on u temperature & pressure pressure Temperature, states & volume are Thermodynamic