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SupremeNerdx
08.04.2020 •
Chemistry
. Sulfur dioxide can be produced in the laboratory by the reaction of hydrochloric acid and a sulfite salt such as sodium sulfite. Na2SO3 2HCl £ 2NaCl SO2 H2O What mass of SO2 can be made from 25.0 g of Na2SO3 and 22.0 g of HCl?
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Ответ:
Mass of SO₂ can be made from 25.0 g of Na₂SO₃ and 22 g of HCl = 12.672 g
Explanation:
SO₂( sulfur dioxide) can be produced in the lab. by the reaction of hydrochloric acid & sulphite salt such as sodium.
the balanced chemical equation is as follows
Na₂SO₃ + 2 HCl → 2 NaCl + SO₂ + H₂O
Moles of Na₂SO₃ =![\frac{Mass}{Molecular mass} =\frac{25}{126} = 0.198](/tpl/images/0588/5011/7300f.png)
Moles of HCl =![\frac{mass}{molecular mass}=\frac{22}{36.5}= 0.6](/tpl/images/0588/5011/b84d2.png)
using mole ratio method to find limiting reagent
For sodium sulfite![\frac{mole}{stoichiometry} = \frac{0.198}{1}= 0.198](/tpl/images/0588/5011/61fae.png)
for HCl![\frac{mole}{stoichiometry} = \frac{0.6}{2}= 0.3](/tpl/images/0588/5011/a8dfb.png)
since sodium sulfite is limiting reactant for above chemical reaction
1 mole of Na₂SO₃ produce 1 mole of SO₂
0.198 mole of Na₂SO₃ produce 0.198 mole of SO₂
∴ Mass of SO₂ produce = mole x molar mass of SO₂
= 0.198 x 64
= 12.672 g
Ответ:
im not certain but i think C and then A
Explanation: