磷酸二氢钠配方 - 结构、性质、用途、示例问题
钠是第一族元素,外观呈银白色。 1807 年,汉弗莱戴维通过氢氧化钠 (NaOH) 的电解首次发现并分离出它。钠用于生产硼氢化钠、叠氮化钠和靛蓝。它还用作一些核反应堆中的热交换器。即使在人体中,钠也被用于神经信号的传输和维持血液中的标准水位。
什么是磷酸二氢钠?
Sodium Dihydrogen Phosphate is an inorganic compound ,commonly used as an industrial chemical.It is also called as monobasic sodium phosphate or Monosodium phosphate.
磷酸的部分中和得到磷酸二氢钠。
磷酸二氢钠的结构:
磷酸二氢钠的性质
磷酸二氢钠的物理性质:
- 磷酸二氢钠的分子量为 120 g/mol。
- 密度等于2.36g/cm 3 。
- 磷酸二氢钠呈白色,呈粉末状或结晶状。
- 磷酸二氢钠的折射率为 1.463。
- 磷酸二氢钠的化学式为 NaH 2 PO 4 。
磷酸二氢钠化学性质:
- 磷酸二氢钠加热到 170°C 以上会生成酸式焦磷酸钠。
2NaH 2 PO 4 → Na 2 H 2 P 2 O 7 + H 2 O
磷酸二氢钠的用途
- 磷酸二氢钠用作食品添加剂。它起乳化剂的作用,被添加到淡奶、牙膏和牲畜饲料中。
- 磷酸二氢钠用作侦探,它有助于识别镁离子。
示例问题
问题1:写出磷酸二氢钠的化学式和结构式?
回答:
The Formula of Sodium Dihydrogen Phosphate is NaH2PO4
问题2:写一个关于磷酸二氢钠的简短笔记?
回答:
Sodium Dihydrogen Phosphate is an inorganic compound ,commonly used as an industrial chemical.It is also called as monobasic sodium phosphate or Monosodium phosphate .
问题3:磷酸二氢钠是如何制备的?
回答:
Partial neutralization of phosphoric acid gives Sodium Dihydrogen Phosphate.
问题4:请解释磷酸二氢钠如何用于鉴定镁离子?
回答:
If in a solution magnesium ions are present and Sodium Dihydrogen Phosphate is added to ammonium chloride and ammonium hydroxide in aqueous solution it gives a white precipitate.
问题5:列出磷酸二氢钠的性质?
回答:
The properties of Sodium Dihydrogen Phosphate are:
- Sodium Dihydrogen Phosphate has a molecular weight of 120 g/mol.
- Density is equal to 2.36g/cm3.
- The color of Sodium Dihydrogen Phosphate is white and it is in powdered or crystalline form.
- Sodium Dihydrogen Phosphate has a refractive index of 1.463.
- The formula of Sodium Dihydrogen Phosphate is NaH2PO4.
- Sodium Dihydrogen Phosphate on heating above 170°C produces Sodium acid pyrophosphate.
2NaH2PO4 → Na2H2P2O7 + H2O