Question 3

  • There is no molecular in ionic compound, neither does INTRAMOLECULAR force.

Question 8

  • Hydrolysis and Brønsted–Lowry acid–base reaction

    Hydrolysis of Ions There are many ionic salt's that make the aqueous solution acidic or basic. The reaction of ionic salts with water is called 'Hydrolysis of salts" Hydrolysis can be explained using Brönsted Lowry theory. If the conjugate acid or base is strong then there will be hydrolysis. Weak acids and bases produce strong conjugate bases and acids

Question 10

  • Root-mean-square speed

    Root mean square speed at lower T Root mean square speed at higher T Mean Speed Particle speed

    Uses of RMS Velocity RMS speed is used to predict how fast molecules are moving at a given Temperature. 3kT 3RT How fast molecules move is directly proportional to their absolute temperature and inversely proportional to their mass. R k Because • • k = F— then— R

Question 17

STRUCTURE & PROPERTIES OF SOLIDS Summary: Ionic Electrically conductive if molten Brittle Usually crystalline High melting point (solids at SATP) Metals Electrically and heat conductive Malleable and ductile Lustrous and ha rd Medium to high melting points (solid at SATP) Molecular No n-conductive Amorphous Non crystalline usually Low melting point (liquid or gas) Covalent Network Sometimes conductive (C) Rigid to flexible Patterned spatial bonds Medium to high melting points

  • Covalent network solid

    carbon silicon diamond silicon dioxide silicon carbide graphite

  • Molecular solid

    Molecular solids are solids that are essentially collections of molecules held together by intermolecular forces (IMFs). The solid structure is maintained by IMFs rather than bonds (metallic, covalent, or ionic). The forces holding the solids together are much weaker than for other types of solids. Molecular solids - Chemistry 301 opentextbcca https://ch301.cm.utexas.edu/section2.php?target=imfs/solids/molecular-solids.html

Question 48

When a buret is rinsed before a titration, which of the techniques below is the best procedure? (A) Rinse the buret one time with some of the titrant solution. (B) Rinse the buret one time with some of the titrant solution and then dry the buret in an oven. (C) Rinse the buret two times: once with some of the titrant solution, then once with distilled water. (D) Rinse the buret two times: each time with some of the titrant solution. nse e uret two times: eac time WI distilled water.

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