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Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients....

Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solutions of lead(II) nitrate and potassium hydroxide are combined.

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Answer #1

Aqueous solutions of lead(II) nitrate [Pb(NO3)2] reacts with potassium hydroxide (KOH) to form precipitate of lead hydroxide [Pb(OH)2] and solution of potassium nitrate (KNO3). The chemical reaction can be written as follows:

Pb(NO3)2(aq)    + KOH(aq) ------->   Pb(OH)2(s)   +   KNO3(aq)

Above unbalanced equation is balanced by taking two equivalents of KOH on reactant side and two equivalents of KNO3 on product side.

Pb(NO3)2(aq)    + 2KOH(aq) ------->   Pb(OH)2(s)   +   2KNO3(aq)

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