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Консультация № 198024
23.03.2020, 20:21
0.00 руб.
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Здравствуйте! У меня возникли сложности с таким вопросом:
1. В лабораториях аммиак получают нагреванием смеси хлорида аммония с гашенной известью. Какие массы NH4Cl, содержащего 5 % примесей, и извести, содержащей 10 % примесей, потребуются для получения 10 л 25%-го раствора аммиака (ρ = 910 г/мл )?
2. Какой объем 35%-й HCl (ρ = 1,175 г/мл) необходимо смешать с одним литром 60%-ной HNO3 (ρ = 1,37 г/мл), чтобы в полученной смеси (царской водке) количества кислот соответствовали стехиометрии её взаимодействия с золотом и платиной?
3. Почему фосфорный ангидрид считается наиболее эффективным осушителем? Можно ли с его помощью осушать воздух, азот, кислород, водород, CO, CO2, SO2, HCl, NO, NH3?
1. В лабораториях аммиак получают нагреванием смеси хлорида аммония с гашенной известью. Какие массы NH4Cl, содержащего 5 % примесей, и извести, содержащей 10 % примесей, потребуются для получения 10 л 25%-го раствора аммиака (ρ = 910 г/мл )?
2. Какой объем 35%-й HCl (ρ = 1,175 г/мл) необходимо смешать с одним литром 60%-ной HNO3 (ρ = 1,37 г/мл), чтобы в полученной смеси (царской водке) количества кислот соответствовали стехиометрии её взаимодействия с золотом и платиной?
3. Почему фосфорный ангидрид считается наиболее эффективным осушителем? Можно ли с его помощью осушать воздух, азот, кислород, водород, CO, CO2, SO2, HCl, NO, NH3?
Обсуждение
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