Молярная масса оксида серы(IV) SO2
M(SO2) = 32 + 2*16 = 64 г.
1 моль любого газа при н.у. занимает объем 22,4 л.
15,36 г = 0,24 моля
Они занимают объем
V = 22,4*0,24 = 5,376 л
Pb3o4+са(оcl)2=cao+pb(ocl)2
pb(ch3coo)2+cl2naoh=ch3coona+pbcl2+h2o
pb(no3)2+naclo+naoh=pbcl2+nano3+h2o
pbo2+cr(no3)3+naoh=pb(no3)2+cr2o3+nano3+h2o
sncl2+kbio3+hcl=sncl4+bicl3+h2o+kcl
geh4+agno3+h2o=hno3+ag+h2geo3
2HNO₃ + Cu(OH)₂ = Cu(NO₃)₂ + 2H₂O1)Cu²⁺ + 2OH⁻ + 2H⁺ + 2NO₃⁻ = Cu²⁺ +2NO₃⁻ + 2H₂0
2)OH⁻ + H⁺ = H₂<span>0
</span>
<span>AgNO</span>₃ + NaCl = NaNO₃ + AgCl↓ 1)Ag⁺ + NO₃⁻ + Na⁺ + Cl⁻ = Na⁺ + NO₃⁻ + AgCl↓ <span>2)Ag</span><span>⁺</span><span> </span><span>+</span><span> </span><span>Cl</span><span>⁻</span><span> </span><span>=</span><span> </span><span>Ag</span><span>Cl</span><span>↓</span><span>
</span>
Na₂SO₃ +
2H₂SO₄ = 2NaHSO₄ + SO₂↑ + H₂O
1)2Na⁺ +
SO₃²⁻ + 4H⁺ + 2SO₄²⁻ = 2Na⁺ + 2HSO₄⁻ + SO2↑ + H2O
<span>2)SO</span><span>₃</span><span>²</span><span>⁻</span><span> + 4H</span><span>⁺</span><span> + 2SO</span><span>₄</span><span>²</span><span>⁻</span><span> = 2HSO</span><span>₄</span><span>⁻</span><span> + SO</span>₂<span>↑ + H</span>₂<span>O</span>
<span>CaO+CO2=CaCO3..........</span>