37, Viscosiry isa measure of substance\'s changes in its surface area intermolec

Question

37, Viscosiry isa measure of substance's changes in its surface area intermolecular forces are in effect ion dipole surface tension 38. When an ion is dissolved. in which of the following forces dipole-dipole forces, andor disponion foeces? d. forces and dispersion forces all of these dipole dipole forces anormio-level view eracetic aaid, which is a weak acid, in aqueous Which picture best represents an water molecules not shown? 40. Which of the following should have the highest conductivity? d 2.6 M 3.0M NaCl 32 M NH Noh b 2.1 M Na Po. c 2,4 M CaCl2 41. How many moles of aitrato ions are peesent in exactly 41sml ofa 1.27 Mironom nitrate solution. d 2.41 mol a 0.151 mol 81 mol b, 5.43 mol 5.08 mol 42 When sulfur trioxide gasis dissolved in waer, which ofthe folowing best reprosents the resulting lution Son (ag) 20H (ag)

Explanation / Answer

Q37.

Viscositty is a measure of how a fluid flow... if it is high, it will not flow, if it is low it will flow easily

So, knowing this, we could state that the viscosity if the resistance to flow for a substance, choose B

Q38

When an ion interacts with water

water = dipole

ion = ion

therefore, expect ion-dipole interactions

Q39

atomic level of acetic acid

a weak acid will dissociate patially

so

there will be HA and H+/A- pais

so

best scenario is A

Q40

high conductivity is given by:

- Large concentrations

- plenty of ions

so..

Na3PO4 --> 3+1 = 4 ions, 2.1 --> 4*2.1 = 8.4 M in total , which is the highest concentration in solutions

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