дано
m(ppa K2S) = 50 g
W(K2S) = 22%
V практ( H2S) = 2 L
φ(H2S)-?
m(K2S) = 50*22% / 100% = 11 g
K2S+2HCL-->2KCL+H2S
M(K2S) = 110 g/mol
M(H2S) = 34 g/mol
m(H2S) = m(K2S) * M(H2S) / M(K2S) = 11*34 / 110 = 3.4 g
V теор(H2S) = Vm * m(H2S) / M(H2S) = 22.4 * 3.4 / 34 = 2.24 L
φ(H2S) = V практ(H2S) / V теор(H2S) * 100% = 2 / 2.24 * 100% = 89.3%
ответ 89.3 %
дано
m(ppa K2S) = 50 g
W(K2S) = 22%
V практ( H2S) = 2 L
φ(H2S)-?
m(K2S) = 50*22% / 100% = 11 g
K2S+2HCL-->2KCL+H2S
M(K2S) = 110 g/mol
M(H2S) = 34 g/mol
m(H2S) = m(K2S) * M(H2S) / M(K2S) = 11*34 / 110 = 3.4 g
V теор(H2S) = Vm * m(H2S) / M(H2S) = 22.4 * 3.4 / 34 = 2.24 L
φ(H2S) = V практ(H2S) / V теор(H2S) * 100% = 2 / 2.24 * 100% = 89.3%
ответ 89.3 %