Advertisements
Advertisements
Questions
What is the difference between molality and molarity?
Differentiate between molarity and molality.
Advertisements
Solution
| Sr. No. | Molarity | Molality |
| 1. | Molarity is the concentration of a material determined as the number of moles of solute dissolved in one litre of solution. | Molality is the concentration calculated as the number of moles of solute found in one kilogram of solvent. |
| 2. | Molarity is denoted by the symbol M. | Molality is denoted by the symbol m. |
| 3. | The molarity formula is moles per litre. | The molality formula is moles per kilogram. |
| 4. | Molarity is impacted by temperature changes. | Molality is not affected by temperature changes. |
| 5. | Changes in pressure affect molarity. | Pressure changes do not affect molality. |
| 6. | Molarity can lead to an imprecise and inaccurate concentration. | Molality can lead to an accurate and precise concentration measurement. |
APPEARS IN
RELATED QUESTIONS
Calculate the amount of carbon dioxide that could be produced when 2 moles of carbon are burnt in 16 g of dioxygen.
If the density of methanol is 0.793 kg L–1, what is its volume needed for making 2.5 L of its 0.25 M solution?
Explain the term molality
Why does the molarity of a solution depend upon temperature?
Solve the following problem:
Write the following number in ordinary decimal form:
3.75 × 10−1
Solve the following problem:
Write the following number in ordinary decimal form:
5.16 × 104
Solve the following problem:
Write the following number in ordinary decimal form:
14.3 × 10−2
Solve the following problem:
Perform the following calculation. Round off your answer to two digits.
`1/(3.40xx10^24)`
Solve the following problem:
Perform the following calculation. Round off your answer to two digits.
`33/(9.00xx10^-4)`
Solve the following problem:
Perform the following calculation. Round off your answer to two digits.
`((4xx10^-3)(9.9xx10^-7))/((789)(1.002xx10^-10)(0.3xx10^2))`
Perform each of the following calculations. Round off your answers to three digits.
(3.26104) (1.54106)
Solve the following problem:
Perform the following calculation. Round off your answer to three digits.
`((9.28xx10^9)(9.9xx10^-7))/((511)(2.98xx10^-6))`
Solve the following problem:
Your laboratory partner was given the task of measuring the length of a box (approx 5 in) as accurately as possible, using a metre stick graduated in milimeters. He supplied you with the following measurements:
12.65 cm, 12.6 cm, 12.65 cm, 12.655 cm, 126.55 mm, 12 cm.
Give your reason for rejecting each of the others.
Give an example of each mixture having the following characteristics. Suggest a suitable method to separate the components of this mixture
Two immiscible liquids.
Calculate the mass of sodium sulphate required to prepare its 20% (mass percent) solution in 100g of water?
What will be the molarity of a solution, which contains 5.85 g of NaCl(s) per 500 mL?
If the concentration of glucose \[\ce{(C6H12O6)}\] in blood is 0.9 g L–1, what will be the molarity of glucose in blood?
An aqueous KCl solution of density 1.20 g mL-1 has a molality of 3.30 mol kg-1. The molarity of the solution in mol L-1 is ______. (Nearest integer)
What quantity (in mL) of a 45% acid solution of a monoprotic strong acid must be mixed with a 20% solution of the same acid to produce 800 mL of a 29.875% acid solution?
