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Answered 2011-11-28 16:28:24

"MolaRity" is the correct spelling for mass per amount solution.

"MolaLity" is the correct spelling for mass per amount solvent.

The conversions of molality, b, to and from the molarity , c,

for one-solute solutions are:

c = ρ.b / [1 + b.M]

and

b = c / [ρ -c.M]

where ρ is the mass density of the solution, b is the molality, and M is the molar mass of the solute.

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Related Questions

Why molarity is more accurate than molality?

because molality is independent of temperature and molarity is dependent on temperature further molality is dilute while molarity is concentrated.


How are concentrations in solutions quantified?

through molarity,molality, normality. through molarity,molality, normality.


Is molality or molarity expressed in grams of solute instead of moles of solute?

Neither. Molarity is moles per litre. Molality is moles in a kilogram.


Why molality is preferred over molarity in expressing the concentration of a solution?

why molarity is preferred over molarity in expressing the concentration of a solution


What is the formula between molarity and molality?

Molarity is defined as grams of solute dissolved in 1 liter of solution and molality is defined as grams of solute dissolvd in 1Kg of solvent


What is the solution concentration expressed in terms of molarity?

Molarity is Moles/Liter, Molality is Moles/kg


What is the formula relation between molality and molarity?

== Molality== (1000xMolarity)/((1000xdensity of solution)- (MolarityxMolecular weight of Solute)) ==


When does molarity and molality become equal?

In dilute solutions... ie closer a solution is to pure water the closer molality and molarity come to equalling each other. This is because the molality uses mass and molarity uses volume, the ratio of these two (mass and volume) is density, and water has the density of 1 therefore the mass and volume are equal to each other. THEREFORE calculating the molarity of water is the same as calculating the molality of water.


How are molarity and molality similar?

Both express moles of solute in the numerator.


Why you use molality in biology experiments?

Molality is used when temperature varies in an exothermic or endothermic reaction because it is not dependent on temperature or pressure. Molality does not depend on tempratute whereas molarity does.


What is the difference between molarity and molality?

The difference is in the denominators.Molarity (M) - the number of moles of solute divided by the number of liters of solution.Molality(m) - the number of moles of solute divided by the number of kilograms of solvent.


Is 0.001mhcl a strong acid?

HCl is a strong acid no matter the molarity or molality.


What is the definition of molarity molality and normality?

Molarity is concentration in moles/L (symbolized by M). Molality is a different way of expressing molarity, but in moles of solute/mass of solvent in mol/kg (symbol m). Normality is molarity x number of equivalents (symbolized by N). Equivalents are the ions that it would dissociate into (H+, OH-, e-, etc.)


Which is more concentrated in 1molarity and 1 molality?

Molality give a greater concentration.


What is the molarity of a solution containing 8.0 moles of solute in 4.2 kg of solvent?

The molality of this solution is 1,905; to calculate the molarity you need the density of the solution.


Why molality is better than the molarity concentration in chemisrtry pratical calculation?

Concentrations in molality (moles of solute per kilograms of solvent) are independent of temperature and pressure whereas concentrations in molarity (moles of solute per total volume of solution in liters) are not.


What is the relation between the molarity and molality of an aqueous solution?

in molarity we dissolved no of moles of solute in 1 dm3 volume of its solution but in molality we dissolved no of moles of solute in 1000 gram or 1 kg of solvent in molarity we don't know the exact amount of solvent quantity but in mplality we know the exact volume of solvent ( water)



What is the of the amount of solute dissolved in a solvent called?

This is known as the concentration or more technically the molarity or molality of the solution.


Why molarity of a solution remains constant?

Molality of a solution remains constant as mass of a solution independent of temperature.



What is the 1 molarity of Na-OH?

Molarity:1.0 mol (NaOH) /L(solution) = 1.0 M NaOHThe conversions of molality, b, to and from the molarity , c,for one-solute solutions are:c = ρ.b / [1 + b.M]andb = c / [ρ -c.M]where ρ is the mass density of the solution, b is the molality, and M is the molar mass of the solute.


What is difference between 1 M solution and 1 N solution?

Check out the link Molarity, Molality and Normality



In biological applications it is often preferable to measure solution concentrations in molality rather than molarity especially if comparing solutions of two different substances This is because?

if one scientist reports concentrations measured in molality, another scientist elsewhere can exactly replicate the work. This is not possible with molarity. I chose the above answer on my quiz and it was actually incorrect. The correct answer should be - two solutions of the same molality have equivalent ratios of solute to water, but two solutions of the same molarity may not have equivalent ratios.


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