15-09-10 - -Pure water does not conduct electricity because...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Wednesday, September 15 th , 2010 Starts from page 6 in Lecture 1. Page 156 textbook - Salt contains a heavy metal ions it will tend to be less soluble - If the salt has a high charged ions then it also will have less solubility - The strength depends on the size of the ions and the charge. Higher the charge less chance for water to dissociate the bonds to make it soluble. - 1. Slats of group 1 cation’s (except li) and NH4+ cation are soluble - 2. Nitrates acetates and perchlorates are soluble - Slats of silver lead and mercury are insoluble - Chlorides bromides and iodides are soluble - Carbonates phosphates sulphides oxides and hydroxides are insoluble - Sulphides of group 2 cations and hydroxides of CA, SR and ba are slightly soluble - Sulphates are soluble except for those of calcium, strontium, and barium - Salts with monovalent ions are generally soluble - Organic molecules have covalent bonds and the only way something can dissolve is that
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: -Pure water does not conduct electricity because there are not enough ionic species for electricity to flow through. It is not an electrolyte.-Adding an electrolyte to water makes enough ions for electricity to pass through-Water is a good solvent for ionic compounds and for poplar covalent compounds(covalent molecules with polar bonds.) -If it contains an o-h bond it is said to have a polar covalent bond-If it has a strong intermolecular interactions you can dissolve in water-Water + ethanol = complete mixing-Water + sucrose = some mixing-Nacl = strong electrolyte-Sucrose = non-electrolyte -Both of these are very soluble in water why?-Sucrose has covalent bonds and when its dissolved in water the molecules remain intact and do not dissociate into ions. So it cannot be an electrolyte because electrolytes need ions. Redox reactions-Electron loss = oxidation-Electron gain = reduction-...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern