题目

When you choose to send one of our free E-cards, you save paper and give friends and family the opportunity to enjoy the wonder of nature. Celebrate the beauty of our natural world and send an E-card to friends and family who care about protecting our planet. Feel free to set your E-card to arrive on any day you please. Looking for something to do besides sending an E-card? Check out our Everyday Environmentalist page with eco-tips on how to live greener, and become an e-member of our free global online community or calculate(计算) your carbon footprint. You can even upload your photos(共12分)实验室中有甲﹑乙两瓶丢失标签的无色溶液,其中一瓶是盐酸,另一瓶是碳酸钠溶液。为确定甲﹑乙两瓶溶液的成分及其物质的量浓度,现操作如下: ①量取25.00mL甲溶液,向其中缓缓滴加乙溶液15.00mL,共收集到CO2气体224mL﹙标况﹚。②量取15.00mL乙溶液,向其中缓缓滴加甲溶液25.00mL,共收集到CO2气体112mL﹙标况﹚。 请回答: (1)根据上述两种不同操作过程及实验数据可判断甲溶液是                 (填名称) (2)甲溶液的物质的量浓度为                   mol﹒L-1 乙溶液的物质的量浓度为                 mol﹒L-1 ﹙忽略CO2在溶液中的少量溶解﹚。 (3)若用类似上述“互滴”的方式。 ①将100 mL 3mol/L的NaAlO2溶液逐滴加到50mL12mol/L的HCl溶液中,充分反应。 写出发生反应的总反应离子方程式                                       。 ②将50mL12mol/L的HCl溶液逐滴加入100 mL 3mol/L的NaAlO2溶液中,充分反应。两种混合方式生成沉淀的量是否相等                 (填“相等”或“不相等”)
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