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【简答题】
已知X是一种酸式盐，H是常见金属单质，F、I是常见非金属单质，D为淡黄色固体，E、G都是工业上重要的碱性物质，A物质可做耐火材料。它们有如图所示的转化关系。试回答下列问题 ⑴X的化学式为：______________ ；G的电子式为_______________ 。 ⑵写出下列反应的化学方程式 ①____________________  ； ②__________________。 ⑶H与同周期原子序数比其大一的另一种金属组成原电池，H作正极，则负极反应式为___________，电解质溶液为______________。 ⑷H的工业制法可用电解原理，当阳极产生可使湿润的淀粉KI试纸变蓝的气体 1.12升（标况）时，阴极生成H____________克，有关化学方程式为________________。
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