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標題:

中和作用.............

發問:

(i)硫酸鋅 (ii)碳酸鎂 (iii)硝酸鉀 (a)判斷它是否溶於水 (b)寫出可製備它的化合物名稱 (c)寫出該生成物過程的完全化學方程式,同埋指出各物質的狀態 (d)描述在實驗室製備它的方法

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• Matrix_1@1@
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i) a) Yes b) H2SO4 + Zn c) H2SO4(aq) + Zn(s) ==> ZnSO4(aq) + H2(g), then by heating the water to dryness, ZnSO4(s) is obtained d)Mixing dilute H2SO4 with Zn until all zinc dissolves. ii) a) No b) Na2CO3 + MgCl2 c) Na2CO3 (aq) + MgCl2 (aq) ==> MgCO3(s) + 2NaCl (aq) d) mix the two solutions together and obtain the MgCO3 by filtration iii) a)Yes b) K2CO3 and Mg(NO3)2 c) K2CO3(aq) + Mg(NO3)2 (aq) ==> 2KNO3(aq) + MgCO3(s) d) mix the two solutions and filter off the solid formed. Heat the resulting solution to dryness.

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