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双酚A工业上用来生产聚碳酸酯防碎塑料，欧盟认为含双酚A奶瓶会诱发性早熟，从2011年3月2日起，禁止含生产化学物质双酚A（BPA）的婴儿奶瓶．工业上用双酚A 请回答： （1）双酚A中含氧官能团名称为______． （2）有机物X为含氧的衍生物，其中含氧的质量分数为27.6%，经测定X的蒸气密度是同温同压下氢气的29倍，核磁共振氢氢谱中只有1种峰，则X的结构______． （3）写出苯酚与X反应制取双酚A的化学方程式______． （4）若反应时双酚A跟 的物质的量之比为1：1，写出生成聚碳酸酯的化学方程式______．
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