please help me with these 3 prelab questions thank you!! Assess your preparation
ID: 1005682 • Letter: P
Question
please help me with these 3 prelab questions thank you!!
Assess your preparation and understanding of today's work by answering the questions below. Your instructor will collect this at the beginning of the laboratory period. Describe the differences among strong, weak, and non electrolytes in terms of number of ions present in solution and ability to conduct an electric current. Compare the processes of dissociation and ionization. Write a balanced chemical reaction to show the dissociation of solid magnesium chloride (MgCl_2) in water. Indicate the physical states of the reactants and products.Explanation / Answer
Stron electrolyte : A sunstance completely ionisable in aquoues solution to gives more number of ions and more ability to conduct electricity is called strong electrolyte.
Exaple all strong acid HClO4, H2SO4, HCl, HI
All strong bases NaOH, KOH , RbOH, CsOH
All Salt solutions aare strong electrolytes.
Weak electrolyte: A substance ionisable in aquous solution to gives less number of ions and less ability to conduct electricity is called weak electrolyte.
Examples ; weak acids CH3COOH, H3PO4, H2Co3
weak bases NH4OH, Mg(OH)2, Ca(OH)2
Non elctrolyte: A substance not ionisable in aquous solution and not conduct electricity is called non electrolyte.
Examples wood, pure water, coal
2. Ionisation is the process that involves the formation of ions where as dissociation is the process of breaking up of a constituent atoms, and molecules .
Ionisation involves the creation of charges across the participating species where as dissociation accour dueto a weak bond between species
NaCl ---------> Na+ + Cl - ionisation
CaCO3 --------> CaO + CO2 dissociate
solid MgCl2 dissolve in water to form MgCl2 aquous solution
3. MgCl2(aq) ------> Mg+2(aq) + 2Cl- (aq)
.
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