初中教育中考化学泰州市2009年初中毕业、升学统一考试化学试题

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• 11下列说法正确的是

  A.pH越小，溶液的酸性越强

  B.pH小于5.6的雨水是酸雨

  C.胃酸过多的病人在空腹时最好多喝一些柠檬汁

  D.用pH试纸伸入某溶液中测定其pH

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• 12下表是氯化铵在不同温度时的溶解度 <table style="BORDER-COLLAPSE: collapse; MARGIN-LEFT: 0.75pt" border="0" cellspacing="0" cellpadding="0" _dj="MsoNormalTable"><tbody><tr style="HEIGHT: 18.6pt"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1.5pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; WIDTH: 77.55pt; PADDING-RIGHT: 0cm; HEIGHT: 18.6pt; BORDER-TOP: windowtext 1.5pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm" width="103">温度/℃</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; WIDTH: 77.35pt; PADDING-RIGHT: 0cm; HEIGHT: 18.6pt; BORDER-TOP: 1.5pt solid; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" width="103">20</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; WIDTH: 77.85pt; PADDING-RIGHT: 0cm; HEIGHT: 18.6pt; BORDER-TOP: 1.5pt solid; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" width="104">40</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; WIDTH: 78.3pt; PADDING-RIGHT: 0cm; HEIGHT: 18.6pt; BORDER-TOP: 1.5pt solid; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" width="104">60</td><td style="BORDER-BOTTOM: 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; WIDTH: 78.55pt; PADDING-RIGHT: 0cm; HEIGHT: 18.6pt; BORDER-TOP: 1.5pt solid; BORDER-RIGHT: 1.5pt solid; PADDING-TOP: 0cm" width="105">80</td></tr><tr style="HEIGHT: 19.6pt"><td style="BORDER-BOTTOM: 1.5pt solid; BORDER-LEFT: 1.5pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; WIDTH: 77.55pt; PADDING-RIGHT: 0cm; HEIGHT: 19.6pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" width="103">溶解度/g</td><td style="BORDER-BOTTOM: 1.5pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; WIDTH: 77.35pt; PADDING-RIGHT: 0cm; HEIGHT: 19.6pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" width="103">40</td><td style="BORDER-BOTTOM: 1.5pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; WIDTH: 77.85pt; PADDING-RIGHT: 0cm; HEIGHT: 19.6pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" width="104">50</td><td style="BORDER-BOTTOM: 1.5pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; WIDTH: 78.3pt; PADDING-RIGHT: 0cm; HEIGHT: 19.6pt; BORDER-TOP: medium none; BORDER-RIGHT: 1pt solid; PADDING-TOP: 0cm" width="104">58</td><td style="BORDER-BOTTOM: 1.5pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; WIDTH: 78.55pt; PADDING-RIGHT: 0cm; HEIGHT: 19.6pt; BORDER-TOP: medium none; BORDER-RIGHT: 1.5pt solid; PADDING-TOP: 0cm" width="105">68</td></tr></tbody></table>据此数据，判断下列说法正确的是

  A.20℃时，氯化铵饱和溶液中氯化铵的质量分数是25％

  B.20℃时，70g氯化铵的饱和溶液升温至40℃得到不饱和溶液

  C.40℃时，75g氯化铵的饱和溶液中加入25g水后氯化铵的质量分数为30％

  D.80℃时，84g的氯化铵饱和溶液降温至60℃时有5g氯化铵析出

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