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When solutions of KCl and Pb(NO3)2 are mixed, a precipitate forms. Which of the following is the balanced equation for the double replacement reaction that occurs?

a. KCl(aq) + Pb(NO3)2 (aq) �¨ KNO3 (aq) + PbCl2 (s)

b. KNO3 (aq) + PbCl2 (s) �¨ KCl(aq) + Pb(NO3)2 (aq)

c. K+ (aq) + NO3-(aq) �¨ KNO3 (aq)

d. 2KCl (aq) + Pb(NO3)2 (aq) �¨ 2 KNO3 (aq) + PbCl2 (s)

e. KCl(aq) + Pb(NO3)2 (aq) �¨ KNO3 (aq) + PbCl(s)

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4 answers

  1. By the way, The answer is D. :0)

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  2. It's that simple? Thank you. I made it harder than it was.

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  3. OK. For whatever it's worth, you can make an arrow this way or this way or this way.
    -->
    ==>
    >>>

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  4. And you think what? Just count the atoms up on both sides and find the ONLY equation which has the same number of atoms on each side.

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