Anonymous
Anonymous asked in Science & MathematicsChemistry · 5 months ago

Write a molecular, total ionic, and net ionic equation for the double displacement reactions that occur when solutions are mixed?

Copper(l) sulfate and calcium chloride

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  • 5 months ago
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    Chemical equations .....

    Are you sure you want copper(I) sulfate? Copper in the +1 oxidation state is unstable, particularly in aqueous solution and will undergo disproportionation to form Cu metal and Cu^2+ ions. Even if you could find a bottle labeled "copper(I) sulfate" on the stock-room shelf, it would be unlikely to actually contain anything but copper(II) sulfate.

    It's possible to write an equation, but unlikely to actually have such species. It will form two insoluble products since CasO4 is insoluble in water as is CuCl.

    Cu2SO4(aq) + CaCl2(aq) --> CaSO4(s) + 2CuCl(s) .............. "molecular" eqn

    2Cu+ + SO4^2- + Ca2+ + 2Cl- --> CaSO4(s) + 2CuCl(s) ........ ionic eqn.

    Note: the ionic equation and the net ionic equation are the same.

    What you will more likely have is a reaction of copper(II) sulfate and calcium chloride, where only calcium sulfate forms an insoluble precipitate. Copper(II) chloride is soluble in water.

    CuSO4(aq) + CaCl2(aq) --> CaSO4(s) + CuCl2(aq) .............. ...... "molecular" eqn

    Cu2+ + SO4^2- + Ca2+ + 2Cl- --> CaSO4(s) + Cu2+ + 2Cl- ........ ionic eqn.

    Ca2+ + SO4^2- --> CaSO4(s) ................. ..................... ............... net ionic eqn.

  • Dr W
    Lv 7
    5 months ago

    that depends.. this is a double displacement reaction

    .. AB + CD ----> AD + CB

    if it's of this form... i.e.. everything is dissolved in H2O

    .. AB(aq) + CD(aq) -----> AD(aq) + CB(aq)

    then

    .. molecular:.. .. ... AB(aq) + CD(aq) -----> AD(aq) + CB(aq)

    .. .total ionic. .. .. . .A(+) + B(-) + C(+) + D(-) ----> A(+) + D(-) + C(+) + B(-)

    ... . net ionic.. . .. .. .. .. . .blank... no reaction.. .all ions cancel

    but if it's of this form.. .. where 1 ppt forms

    .. AB(aq) + CD(aq) -----> AD(s) + CB(aq)

    then

    .. molecular:.. .. ... AB(aq) + CD(aq) -----> AD(s) + CB(aq)

    .. .total ionic. .. .. . .A(+) + B(-) + C(+) + D(-) ----> AD(s) + C(+) + B(-)

    ... . net ionic.. . .. .. A(+) + D(-) ----> AD(s)

    and if it's of this form.. .. where 2 ppts form

    .. AB(aq) + CD(aq) -----> AD(s) + CB(s)

    then

    .. molecular:.. .. ... AB(aq) + CD(aq) -----> AD(s) + CB(s)

    .. .total ionic. .. .. . .A(+) + B(-) + C(+) + D(-) ----> AD(s) + CB(s)

    ... . net ionic.. . .. .. A(+) + B(-) + C(+) + D(-) ----> AD(s) + CB(s)

    **********

    oh.. I see. you added Copper(l) sulfate and calcium chloride after the question.

    ok.. so you have this reaction

    ... Cu2SO4(aq) + CaCl2(aq) -----> 2 CuCl( ) + 1 CaSO4( )

    fill in the ( ) with aq or s depending on whether or not CuCl and CaSO4 are soluble in H2O. Then choose a reaction from above and sort out the answer.

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