• Summersnow8
  • Stacey Warren - Expert
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  • katieb
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  • anonymous
Vapour pressure is determine by the rate of collisions of the molecules to the walls of the container. I would deduce that if the particle consists of a molecule, the vapour pressure will be low as the molecule is heavier than an atom, like Chlorine, thus having lower kinetic energy and subsequently a lower amount of collisions. Now, to determine gases formed, imagine the decomposition of each and every compound and see which one has molecules and which one has gas compounds. NB: I will not balance, though there is no need. For sucrose:\[C _{12}H _{22}O _{11}\rightarrow CO _{2}+H _{2}O\] For Calcium nitrate:\[Ca(NO _{3})_{2}\rightarrow CaO+NO _{2}+O _{2} \] For Nikel Sulphate:\[NiSO _{4}\rightarrow NiO+SO _{3} \] For Lithium Phosphate(III):\[Li _{3} PO _{4}\rightarrow LiO+P _{2}O _{5} \] For Brine:\[NaCl \rightarrow Na+Cl _{2} \] Conclusively, the alternative of Calcium Nitrate will be the best as there are two gases, where one of them is an a single molecule/ideal, that has the highest kinetic energy, contributing more a higher number of collisions.
  • anonymous
Hope it helped.

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