Balanced chemical reaction:
<span>8H</span>⁺<span>(aq) + 6Cl</span>⁻<span>(aq) + Sn(s) + 4NO</span>₃⁻<span>(aq) → SnCl</span>₆²⁻<span>(aq) + 4NO</span>₂<span>(g) + 4H</span>₂O<span>(l).
Nitrate anion (NO</span>₃⁻) is oxidazing agent, because nitrogen (oxidation number +5) in nitrate gains electrons and became nitrogen dioxide (NO₂), where now nitrogen has oxidation number +4, so nitrogen is reduced.
Answer:
Mass of calcium carbonate decompose 49g.
Explanation:
Given data:
Mass of CaO = 28.00 g
Mass of CO₂ = 21.97 g
Mass of calcium carbonate decompose = ?
Solution:
Chemical equation:
CaCO₃ → CO₂ + CaO
Number of moles of CO₂:
Number of moles = mass/molar mass
Number of moles = 21.97 g / 44 g/mol
Number of moles = 0.49 mol
Number of moles of CaO:
Number of moles = mass/molar mass
Number of moles = 28.00 g / 56.1 g/mol
Number of moles = 0.49 mol
Now we will compare the moles of CaCO₃ with CaO and CO₂ .
CO₂ : CaCO₃
1 : 1
0.49 : 0.49
CaO : CaCO₃
1 : 1
0.49 : 0.49
Mass of CaCO₃ decompose:
Mass = number of moles × molaer mass
Mass = 0.49 mol × 100.1 g/mol
Mass = 49 g
Called sustainable chemistry
