亚硫酸锶
外观
亚硫酸锶 | ||
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识别 | ||
CAS号 | 13451-02-0 | |
PubChem | 11171195 | |
InChI |
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InChIKey | VTBSJEPGLHXIIS-UHFFFAOYSA-L | |
性质 | ||
化学式 | O3SSr | |
摩尔质量 | 167.68 g·mol−1 | |
外观 | 无色晶体 | |
熔点 | 分解 | |
溶解性(水) | 0.0015 g(25 °C)[1] | |
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
亚硫酸锶是一种无机化合物,化学式为SrSO3,它是难溶于水的固体,在20~90 °C的溶度积为6.72×10−11~3.65×3.65×10−10。[2]它在空气中于700 °C氧化。[3]
制备及性质
[编辑]亚硫酸锶可由可溶性锶盐和亚硫酸盐反应沉淀得到:[4]
- Sr2+ + SO32− → SrSO3↓
氧化锶和二氧化硫在230 °C反应也能生成亚硫酸锶,其反应慢于氧化钡的相应反应。[5]
它加热可以分解,在氮气中600~800 °C的分解产物有二氧化硫、硫、硫化锶、硫酸锶和硫代硫酸锶,这些产物在多步反应中生成:[6]
- SrSO3 → SrO + SO2
- 2 SrSO3 + SO2 → 2 SrSO4 + 1/2 S2
- 2 SrO + 3/2 S2 → 2 SrS + SO2
参考文献
[编辑]- ^ W. M. Haynes. CRC Handbook of Chemistry and Physics. 97th edition. Taylor & Francis Group, LLC. 2016-2017. pp 4-88. ISBN 978-1-4987-5429-3
- ^ Rodin, I. V.; Margulis, E. V. Solubility of barium and strontium sulfites in water. Zhurnal Neorganicheskoi Khimii, 1983. 28 (1): 255-256. ISSN 0044-457X.
- ^ Margulis, E. V.; Beisekeeva, L. I. Transformations of solid sulfites of alkali and alkaline-earth elements during heating in air. Zhurnal Prikladnoi Khimii (Sankt-Peterburg, Russian Federation), 1972. 45 (1): 178-179. ISSN 0044-4618.
- ^ 4.0 4.1 Natalie Chiaverini, Tom Mortier. A Qualitative Analysis of Sulfite Ions in White Wine Based on Visible Color Changes. Journal of Chemical Education. 2015-05-12, 92 (5): 877–880 [2021-10-22]. ISSN 0021-9584. doi:10.1021/ed500811h. (原始内容存档于2021-10-22) (英语).
- ^ Birnbaum, K.; Wittich, C. Action of sulphurous anhydride on the oxides of the alkaline earth-metals. Berichte der Deutschen Chemischen Gesellschaft, 13. 651-653. ISSN 0365-9496.
- ^ Ketov, A. N.; Nichkovskii, V. V. Mechanism of the thermal decomposition of calcium, strontium, and barium sulfites. Nauchnye Doklady Vysshei Shkoly, Khimiya i Khimicheskaya Tekhnologiya, 1958. 667-671. ISSN: 0470-469X.