Question

Пожалуста помогите.Заранее спасибо большое! Напишите уравнения реакций, осуществляющие следующие превращения: а)С-->CO-->CO2-->MgCO3-->CO2-->K2CO3-->KHCO3; б)Fe-->FeO-->Fe2O3-->FeCl3-->Fe(OH)3-->Fe2(SO4)3-->FeCl3. Если в превращениях CaCO3-->CaO-->Ca(OH)2-->Ca(HCO3)2-->CaSO4 в исходном извястняке содержания карбоната кальция составляет 80%, а выход последнего продукта - сульфата кальция - составляет по сравнению с теоретически возможным 72%, то сколько килограммов сульфата кальция можно получить из 1 т известняка?

Answer 1

Equations for the Given Transformations:

а) The equations for the given transformations are as follows: 1. C -> CO 2. CO -> CO2 3. CO2 -> MgCO3 4. MgCO3 -> CO2 5. CO2 -> K2CO3 6. K2CO3 -> KHCO3

б) The equations for the given transformations are as follows: 1. Fe -> FeO 2. FeO -> Fe2O3 3. Fe2O3 -> FeCl3 4. FeCl3 -> Fe(OH)3 5. Fe(OH)3 -> Fe2(SO4)3 6. Fe2(SO4)3 -> FeCl3

Calculation of Calcium Sulfate Yield:

To calculate the amount of calcium sulfate (CaSO4) that can be obtained from 1 ton of limestone, we need to consider the given information.

Given: - The limestone contains 80% calcium carbonate (CaCO3) by weight. - The yield of calcium sulfate (CaSO4) is 72% compared to the theoretically possible yield.

To find the amount of calcium sulfate, we can follow these steps:

1. Calculate the amount of calcium carbonate in 1 ton of limestone: - 1 ton = 1000 kg - Calcium carbonate content = 80% of 1000 kg = 800 kg

2. Calculate the theoretical yield of calcium sulfate: - The theoretical yield is the maximum amount of calcium sulfate that can be obtained from the given amount of calcium carbonate. - Since the molar mass of calcium carbonate (CaCO3) is 100.09 g/mol and the molar mass of calcium sulfate (CaSO4) is 136.14 g/mol, we can calculate the theoretical yield as follows: - Theoretical yield = (800 kg / 100.09 g/mol) * (136.14 g/mol) = 1088.53 kg

3. Calculate the actual yield of calcium sulfate: - The actual yield is 72% of the theoretical yield. - Actual yield = 72% of 1088.53 kg = 783.91 kg

Therefore, from 1 ton of limestone, it is possible to obtain approximately 783.91 kg of calcium sulfate.

Please note that the calculations provided are based on the given information and assumptions.