chemistry

posted by .

A reaction will be nonspontaneous under all conditions when

a. delta G is negative
b. delta H is negative and DS is positive
c. delta H is positive and DS is negative
d. delta H is positive independent of the value and sign of DS
e. delta S is positive independent of the value and sign of DH

?

  • chemistry -

    dG = dH - TdS.
    Go through each answer and see if it fits; for example, #1 can't be right because when dG is - the reaction is spontaneous.
    #2.
    If dH is - and dS is +, then the term TdS is - so dG is always - when this is true and the rxn is spontaneous. So scratch 2.
    Etc.

  • chemistry -

    e?

  • chemistry -

    e is not it.
    dG = dH - TdS.
    If dS is + then the term -TdS will be negative but some dH values (even though they are + values) still can give a - dG value and the reaction will be spontaneous.

  • chemistry -

    so d then

  • chemistry -

    no. c

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Calculate the DELTA H(rxn), DELTA S(rxn), DELTA S(universe), DELTA G(rxn). For each system below indicate whether DELTA S and DELTA H are positive or negative. Then indicate if the reaction is entropy driven, enthalpy driven or neither. …
  2. Chemistry

    For the solvation of borax in water, would delta Ssys increase or decrease in the reaction?
  3. Chemistry

    Is the following reaction spontaneous at 25*C?
  4. Chemistry

    For the reaction described by the chemical equation: 3C2H2(g) -> C6H6(l) .. Delta H rxn = -633.1 kJ/mol a) Calculate the value of Delta S rxn at 25.0 C... b) Calculate Delta G rxn... c) In which direction is the reaction, as written, …
  5. chemistry

    For a particular reaction delta G is more negative than delta H. This means that a. delta S is zero. b. deltaS is negative c. delta S is positive d. delta S is negative if delta H is positive. e. delta S is negative if delta H is negative. …
  6. Chemistry(Please check answers)

    1) For a reaction delta Go is more negative than delta Ho. What does this mean?
  7. CHEMISTRY

    I know I posted this question before, but can you clarify it?
  8. Chemistry

    I know I posted this question before, but can you clarify it?
  9. Chemistry

    If the sign for delta G is negative (spontaneous process) and sign for delta S is positive (more disorder) for both dissolving processes, how could one be endothermic (positive delta H- NaNO3 dissolves in water) and one be exothermic …
  10. chem delta s

    if delta s is high which means positive high entropy, then when a drug binds to a protein why is it negative delta s?

More Similar Questions