Дано
m(S)=6.4 g
NaOH
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m(Na2SO3)-?
6.4 XL
S + O2-->SO2 M(S)=32 g/mol Vm=22.4L/mol
32 22.4
X(SO2)=6.4*22.4/32 = 4.48 л
4.48 Xg
SO2+2NaOH-->Na2SO3+H2O M(Na2SO3)=126 g/mol
22.4 126
X=4.48 * 126 / 22.4
X=25.2 g
ответ 25.2 г
Mr (Na2S) = 2Ar (Na) + Ar (S) = 2(23) а.е.м. + 32 а.е.м. = 78 а.е.м.
2,3,5,5-тетраметилоктен-3
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