简单的公式磷酸钙矿物?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 07 - 10 - t13:11:42z //www.hoelymoley.com/feeds/question/6525 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/6525 10 简单的公式磷酸钙矿物? 墨丘利- 197 //www.hoelymoley.com/users/4479 2015 - 09 - 12 - t15:51:51z 2015 - 12 - 30 - t09:55:49z < p >我有一个作业的问题:< / p > < blockquote > < p >的公式:< / p > < p > $ $ \ ce {Ca}值\ ce {(PO4)} _y吗\ ce{哦}$ $ < / p > < p >找到的最低价值$ x, y和国家美元(查找)矿物名称。

Based on the anion charges I know, and trying to balance them, I would expect

$$\ce{2Ca^{2+} + (PO_{4})^{3-} + OH^{-} -> Ca_{2}(PO_{4})OH}$$

But I couldn't find a mineral with this formula, and the closest I could find was hydroxyapatite with the formula:

$$\ce{Ca_{5}(PO_{4})_{3}OH}$$

which is still balanced based on the charges I had initially used, but isn't the same. Can anyone explain why this mineral doesn't form as I had expected?

 //www.hoelymoley.com/questions/6525/-/6825 # 6825 4 答案由Gimelist磷酸钙矿物的简单公式? Gimelist //www.hoelymoley.com/users/725 2015 - 10 - 31 - t08:16:31z 2015 - 10 - 31 - t08:16:31z < p >是的,你在你的计算是正确的。然而,在自然界中最常见的水合磷酸氢钙确实是羟磷灰石。注意,工业,还有其他几种钙磷酸盐(见< a href = " https://en.wikipedia.org/wiki/Calcium_phosphate # Calcium_phosphates”rel =“nofollow”> < / >的联系,注意,没有一个人是你的磷酸钙)它形成的原因而不是“简单”的矿物是更稳定的热力学。我不确定确切的原因。< / p > < p >磷灰石在性质和岩石,非常稳定,几乎只要有磷酸,它与钙结合形成磷灰石。没有磷灰石的唯一方法是没有钙,磷酸盐,或有一些很奇异系统,抑制其形成。< / p > < p >这也是已知的实验。在< a href = " http://dx.doi.org/10.1180/minmag.1966.036.276.06 " rel =“nofollow”>实验< / >,< a href = " http://dx.doi.org/10.1180/minmag.1967.036.280.08 " rel =“nofollow”> < / >磷酸钙模拟系统早在60年代,很难形成矿物磷灰石。< / p >
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