就这一题啦
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6.(1) m(CO2) == 44*224/22400 == 0.44g
(2) 2NaHCO3 == Na2CO3 + CO2 + H2O
2*84g 44g
1.68g 0.44g
m(Na2CO3)% == (10.0 -0.44)/10.0 *100% == 95.6%
(3) 2NaHCO3 == Na2CO3 + CO2 + H2O
2*84g 44+18
xg (a-b)g
x == 168*(a-b)/62
m(Na2CO3)% == [a - 84(a-b)/31] /a*100% == ( 84b-53a)/31a *100%
(2) 2NaHCO3 == Na2CO3 + CO2 + H2O
2*84g 44g
1.68g 0.44g
m(Na2CO3)% == (10.0 -0.44)/10.0 *100% == 95.6%
(3) 2NaHCO3 == Na2CO3 + CO2 + H2O
2*84g 44+18
xg (a-b)g
x == 168*(a-b)/62
m(Na2CO3)% == [a - 84(a-b)/31] /a*100% == ( 84b-53a)/31a *100%
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