Alvan Ikoku College of Education, Owerri Owerri, Imo State, 2019/2020 HND FORM A - Owerri

Tuesday, 2 July 2019
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City: Owerri, Imo

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Contact name PASTOR WISDOM
Phone 08032802176

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Alvan Ikoku College of Education, Owerri Owerri, Imo State, 2019/2020 HND FORM AND PART-TIME FORM IS OUT CALL 08032802176 ND POST-UTME FORM is also on sale Call the Admin Office for Registration...









Sodium pyrosulfate
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Sodium pyrosulfate[1]
Sodium pyrosulfate.png
Names
IUPAC name
Disodium disulfate
Other names
Sodium pyrosulphate; Disulfuric acid disodium salt, disodium disulfate
Identifiers
CAS Number
13870-29-6 ☑
3D model (JSmol)
Interactive image
ChEMBL
ChEMBL111016 ☒
ECHA InfoCard100.034.190
SMILES[show]
Properties
Chemical formula
Na2S2O7
Molar mass222.12 g/mol
AppearanceTranslucent white crystals
Density2.658 g/cm3
Melting point400.9 °C (753.6 °F; 674.0 K)
Boiling pointdecomposes at 460 °C (860 °F; 733 K)
Solubility in water
hydrolyses[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Sodium pyrosulfate is an inorganic compound with the chemical formula of Na2S2O7.[1] It is a colorless salt.[3]


Contents
1Preparation
2Applications
3See also
4References
Preparation
Sodium pyrosulfate is obtained by the dehydration of sodium bisulfate:[4]

2 NaHSO4 → Na2S2O7 + H2O

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