If a 1.68-g sample of witherite were to react completely with 24.6 mL of 0.2558 M HCl,?
回答 (1)
2016-08-03 4:06 am
BaCO3 + 2 HCl → BaCl2 + CO2 + H2O
Supposing BaCO3 is the only substance that reacts with HCl:
(0.0246 L) x (0.2558 mol/L HCl) x (1 mol BaCO3 / 2 mol HCl) x (197.3359 g BaCO3/mol) = 0.62089 g BaCO3
(0.62089 g) / (1.68 g) = 0.36957 = 37.0% BaCO3
Supposing BaCO3 is the only substance that reacts with HCl:
(0.0246 L) x (0.2558 mol/L HCl) x (1 mol BaCO3 / 2 mol HCl) x (197.3359 g BaCO3/mol) = 0.62089 g BaCO3
(0.62089 g) / (1.68 g) = 0.36957 = 37.0% BaCO3
收錄日期: 2021-04-21 19:28:02
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