Question

А16: Число моль диоксида серы, которое можно получить из 2 моль (FeS2), равно: 1)1 2)2 3)3 4)4 И напишите поподробнее (напишите уравнение) А17: Число моль NaOh необходимых для взаимодействия с 1 моль FeCl2? равно: 1)1 2)2 3)3 4)4 Тоже поподробнее (уравнение)

Answer 1

А16: Число моль диоксида серы, которое можно получить из 2 моль (FeS2), равно:
 4)4
4FeS2 + 11O2 = 2Fe2O3 + 8SO2
А17:
Число моль NaOh необходимых для взаимодействия с 1 моль FeCl2? равно:
 2)2
 FeCl2 + 2NaOH = Fe(OH)2 + 2NaCl

Answer 2

I will answer your questions in detail.

A16: The number of moles of sulfur dioxide that can be obtained from 2 moles of FeS2 is equal to:

- The answer is 2. This is because the reaction of FeS2 with oxygen produces sulfur dioxide and iron oxide, according to the following equation:

$$4FeS2 + 11O2 \rightarrow 2Fe2O3 + 8SO2$$

- From this equation, we can see that 4 moles of FeS2 produce 8 moles of SO2, so 2 moles of FeS2 produce 4 moles of SO2. Therefore, the number of moles of SO2 is equal to the number of moles of FeS2.

A17: The number of moles of NaOH required to react with 1 mole of FeCl2 is equal to:

- The answer is 2. This is because the reaction of FeCl2 with NaOH produces iron hydroxide and sodium chloride, according to the following equation:

$$FeCl2 + 2NaOH \rightarrow Fe(OH)2 + 2NaCl$$

- From this equation, we can see that 1 mole of FeCl2 reacts with 2 moles of NaOH, so the number of moles of NaOH is equal to twice the number of moles of FeCl2.