CEM 142 FINAL MSU
As the atoms move even nearer, which pressure is in most powerful? - ANS-The repulsion of
the electrons push at the atoms, so the electromagnetic repulsion is most powerful
At the capacity minimum, which force is the most powerful? - ANS-electromagnetic attraction
equals electromagnetic repulsion
Does growing the temperature increase or decrease the solubility of sodium chloride NaCl -
ANS-Increases
For a solute to dissolve what changes ought to occur? - ANS-Overcome IMFs, triumph over
interactions between debris and solvent, new interactions want to be formed among solute and
solvent
How do you increase the solubility of a saturated answer (with out including solvent/converting
the mass)? - ANS-Raise the temperature of the gadget
If the temperature DECREASES whilst an answer is shaped, then... - ANS-The sum of the
interactions within the answer are weaker than those in the separated solute and solvent
If the temperature will increase whilst the answer is shaped then... - ANS-
If you add water to a concentrated answer, what stays steady? - ANS-The moles of the solute
(moles solute in diluted solution=moles solute in focused solution)
In a combustion reaction, what's the signal of deltaH (enthalpy) - ANS-bad (it is exothermic)
In what phases of depend are IMFs present - ANS-solids, liquids, and gases
(solids>beverages>gases)
Is deltaG temperature structured? - ANS-YES
What are the entropy/enthalpy values for freezing? - ANS-deltaSsys<zero, deltaHsys<0,
deltaHsurr>zero, deltaSsurr>0, deltaSnet>0
What are the entropy/enthalpy values for melting? - ANS-deltaSsys>0, deltaHsys>zero,
deltaHsurr<0, deltaSsurr<0, deltaSnet>0
What can Coulomb's regulation be used to explain (four matters) - ANS-1. Interactions inside
atoms (electron-proton interaction)
As the atoms move even nearer, which pressure is in most powerful? - ANS-The repulsion of
the electrons push at the atoms, so the electromagnetic repulsion is most powerful
At the capacity minimum, which force is the most powerful? - ANS-electromagnetic attraction
equals electromagnetic repulsion
Does growing the temperature increase or decrease the solubility of sodium chloride NaCl -
ANS-Increases
For a solute to dissolve what changes ought to occur? - ANS-Overcome IMFs, triumph over
interactions between debris and solvent, new interactions want to be formed among solute and
solvent
How do you increase the solubility of a saturated answer (with out including solvent/converting
the mass)? - ANS-Raise the temperature of the gadget
If the temperature DECREASES whilst an answer is shaped, then... - ANS-The sum of the
interactions within the answer are weaker than those in the separated solute and solvent
If the temperature will increase whilst the answer is shaped then... - ANS-
If you add water to a concentrated answer, what stays steady? - ANS-The moles of the solute
(moles solute in diluted solution=moles solute in focused solution)
In a combustion reaction, what's the signal of deltaH (enthalpy) - ANS-bad (it is exothermic)
In what phases of depend are IMFs present - ANS-solids, liquids, and gases
(solids>beverages>gases)
Is deltaG temperature structured? - ANS-YES
What are the entropy/enthalpy values for freezing? - ANS-deltaSsys<zero, deltaHsys<0,
deltaHsurr>zero, deltaSsurr>0, deltaSnet>0
What are the entropy/enthalpy values for melting? - ANS-deltaSsys>0, deltaHsys>zero,
deltaHsurr<0, deltaSsurr<0, deltaSnet>0
What can Coulomb's regulation be used to explain (four matters) - ANS-1. Interactions inside
atoms (electron-proton interaction)
