①该溶液的焰色反应呈现出紫色．

②取10mL该溶液于试管中滴加Ba（NO₃）₂溶液，加稀硝酸酸化后过滤得到0.03mol白色沉淀，向滤液中加入AgNO₃溶液未碱沉淀产生．

③另取10mL该溶液于试管中，滴加NaOH溶液产生白色沉淀，当沉淀增加到一定量后开始产生气体，最后沉淀完全溶解，并且随NaOH溶液的加入，沉淀和气体的变化关系如图所示：

    For five years, Claire Lomas hasn't been able to walk or feel her legs. But that hasn't1her. She was 2a professional horse rider. But in 2007, she was thrown off her horse. The3paralyzed her from the chest down. She spent all her time in a 4 at least until January, 2012. That's when she started5again, thanks to a ₤ 75, 000 bionic suit known as the Re walk.

    “It's6after five years of sitting down to be back on my7 she said, “and it's fully weight-bearing and I can walk in it as well. "The Re Walk and two canes would8her when she wanted to walk. But it's not9. Each day, when she started, she could10only 30 steps. Every11was a challenge, and because she couldn't 12 where she was standing, she 13feared falling over. She had bigger14though. Lomas decided to set out to walk the entire length of the London Marathon.

    She started, alongside 35,0001516 days ago, but today, May 8th, 2012, in the shadow of Buckingham Palace, she16—to the screams of thousands of fans who came out to support her.

    "It's a moment I'm going to17 for the rest of my life,” she told the BBC. “The support here has been so amazing—I didn't18it here like this. I couldn't believe it when I19this morning in the taxi to start, and I thought it was just a 20day in London. Someone told me they're all there for me.''

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