五种常见可溶性碱化学式

2025-03-14 11:47:33
推荐回答(5个)
回答(1):

五种常见可溶性碱化学式:NaOH,Ba(OH)2,Ca(OH)2,KOH,NH3.H2O。

碱的定义:
通常指味苦的、溶液能使特定指示剂变色的物质(如使紫色石蕊变蓝,使酚酞变红等),其水溶液的PH值大于7。
在水溶液中电离出的阴离子全部是氢氧根离子(今理论认为,电离时能吸收质子的物质为碱性,阴离子全为OH-的为碱类,统称碱),与酸反应形成盐和水。典型的碱如胺类物质(包括氨水,化学式:NH3·H2O),烧碱(氢氧化钠,化学式:NaOH),熟石灰[氢氧化钙,化学式:Ca(OH)2]等。碱的更广义的概念是指提供电子的物质,或是接受质子的物质。

碱的通性:要注意的是有些性质只适用于可溶性的碱。

1、碱溶液能与酸碱指示剂作用;
碱溶液遇紫色石蕊试液变蓝(现象不明显,但有变化),遇无色酚酞溶液变红(现象明显)
2、碱能与非金属单质发生反应;
3、碱能与酸发生反应,生成盐和水(这类反应通常被称作中和反应);
4、碱溶液能与酸性氧化物反应,生成盐和水;
5、碱溶液(相对强碱)能与盐反应,生成新碱(相对弱碱)和新盐

回答(2):

NaOH,KOH,Ca(OH)2,Ba(OH)2,NH3•H2O

回答(3):

KOH Ca(OH)2 Ba(OH)2 NaOH NH3`H2O

回答(4):

NaOH,Ba(OH)2,Ca(OH)2,KOH,NH3.H2O。

回答(5):

氢氧化钙不是微溶于水的吗???怎么变可溶了???

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