Write the precipitate(s) that will form and remain when the following solutions
ID: 509389 • Letter: W
Question
Write the precipitate(s) that will form and remain when the following solutions are mixed excess H_2SO_4(aq) + Pb(NO_3)_2(aq) + K_2CO_3(aq) ppt(s) =___ excess NaOH(aq) + MgCl_2(aq) + ZnBr_2(aq) ppt(s) = ___ A student divides an unknown compound into two tests tubes and performs these tests. When excess Pb(NO_3)_2 is added to the first tube there is a precipitate When excess H_2SO_4 is added to the second test tube there is a precipitate When KlO_3 is added to the third tube there is a precipitate The compound could be (1 only): ZnSO_4 AgNO_3 Ba(OH)_2 CaCl_2 (NH_4)_2 CO_3Explanation / Answer
There are three anions nitrate, sulphate and carbonate. and two metal ions K+ and Pb^2+. All nitrates are soluble and all Potassium salts are soluble. So, only Pb^2+ will be able to form precipitate. So, the precipitate that can form is PbSO4 and PbCO3.
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There are three metal ions Na+, Zn^2+ and Mg^2+. and three anion OH-, Cl- and Br-. Amon these all types of Na+ salts are soluble. . All, chloride and bromides are soluble. So, the precipitate that can form is Mg(OH)2 and Zn(OH)2.
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The compound could be Ba(OH)2
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