【題目】下表記錄了物質(zhì)X的溶液分別加入到另外三種物質(zhì)的溶液中產(chǎn)生的現(xiàn)象。則物質(zhì)X的化學(xué)式可能是( )。

物質(zhì)

氫氧化鈉

碳酸鈉

石蕊

現(xiàn)象

無明顯現(xiàn)象

產(chǎn)生氣泡

溶液變紅

A.Ca(OH)2 B．CuSO4 C．HCl D．KCl

【答案】C

【解析】

試題分析：用代入法可知X為鹽酸。

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