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Which of the two, molarity and molality,...

Which of the two, molarity and molality, is better to express concentration and why?

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Knowledge Check

  • Molality is expressed in :

    A
    grams/litre
    B
    Litre/moles
    C
    Moles/litre
    D
    Mole/kg

  • which of the following mode of expressing the concentration is independent of temperature? Molality, Normality, Formality, Molarity

    A
    Molarity
    B
    Molality
    C
    Formality
    D
    Normality

  • Molarity is expressed in gram/litre

    A
    litre/mol
    B
    litre/mol
    C
    mol/litre
    D
    mol/kg.
    • OMEGA PUBLICATION-SAMPLE QUESTION PAPER -III (PUNJAB)-QUESTION
    1. Which of the two, molarity and molality, is better to express concentr...

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    2. State first law of Thermodynamics. Give its mathematical form.

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    3. Mass of 1 molecule .of NH(3) is.

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    4. What is the oxidation state of Cr in K(2)Cr0(3)

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    5. Explain Pauli’s exclusion principle.

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    6. Give two characteristics of homologous series.

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    7. If a plant has fibrous root then what kind of venation does its leaves...

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    8. What is screening effect ?

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    9. Define empirical formula.

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    10. Calculate mass of 10^20 atoms of oxygen.

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    11. What raw materials are needed for a plant to get the process of photos...

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    12. Explain why: Al utensils should not be kept in water over night.

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    13. Explain why Al wire is used to make transmission cables.

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    14. Distinguish between classical and photochemical smogs.

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    15. Define disproportionisation and simple displacement redox reactions.

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    16. Why do aldehydes and ketones have high dipole moments?

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    17. C Cl4 is not hydrolysed but SiCl4 can be hydrolysed with water. Why ?

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    18. Derive van der Waals’ equation of State for n moles of gas.'

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    19. Calculate the kinetic energy of 0.2 g of H2 at 27^@C.

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    20. Calculate enthalpy of the reaction : 4NH3(g) +3O2(g) rarr 2N2(g)+ 6H2O...

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