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硫酸鋅,醋酸鋅,無水醋酸鋅

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無水醋酸鋅溶液的配置標(biāo)準(zhǔn)
發(fā)布時間:2020-05-15        瀏覽次數(shù):10        返回列表
無水醋酸鋅是一種無色無味的無色或白色結(jié)晶、顆粒或粉末,我們都知道任何溶液都需要正確的配置,那么我們共同看一下無水醋酸鋅溶液的配置標(biāo)準(zhǔn)是怎樣的:
1、無水醋酸鋅的標(biāo)準(zhǔn)溶液配制:首先稱取4.3977gZnSO4·7H2O,溶于水后,轉(zhuǎn)移至1L量瓶中,定容搖勻,得到的是含鋅為1mg/mL的溶液。
2、這種含鋅的溶液是不需要標(biāo)定的,一般是稱取4.40g就可以了。

3、校正容量瓶,要求高一點稱用基準(zhǔn)氧化鋅來配制:將氧化鋅在800度高溫下灼燒1小時,冷卻稱量,讓它溶于100mL(1+100)的硫酸溶液中,轉(zhuǎn)移至1L量瓶中,定容搖勻,得到的是含鋅為1mg/mL的溶液。

文章摘自:http://www.zbguangyu8888.com/

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