2004年5月,某市发生了一起亚硝酸钠中毒事件。亚硝酸钠外观酷似食

20045月,某市发生了一起亚硝酸钠中毒事件。亚硝酸钠外观酷似食盐,有咸味,加热会分解,放出有臭味的气体。请阅读下表信息,判断以下区别亚硝酸钠和氯化钠的方法错误的是(   

                             物质

试剂            现象                   

亚 硝 酸 钠

NaNO2

      跟稀盐酸作用

   放出红棕色的气体

      跟硝酸银溶液作用

   生成浅黄色的沉淀

A.滴加稀盐酸                            B. 滴加硝酸银溶液

C.品尝味道                              D.加热

答案

C [NaNO2NaCl 都有咸味,且NaNO2有毒,品尝味道的方法是错误的。]

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