Ответ:
дано
m(K2S)= 42 g
η(H2S) = 78%
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m прак (H2S)-?
K2S+2HNO3-->2KNO3+H2S
M(K2S) = 110 g/mol
n(K2S) = m/M =42 / 110 = 0.38 mol
n(K2S) = n(H2S) = 0.38 mol
M(H2S) = 34 g/mol
m теор (H2S) = n*M = 0.38 *34 = 12.92 g
m прак (H2S) = 12.92 * 78% / 100% = 10.08 g
ответ 10.08 г
Объяснение:
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Ответ:
дано
m(K2S)= 42 g
η(H2S) = 78%
------------------
m прак (H2S)-?
K2S+2HNO3-->2KNO3+H2S
M(K2S) = 110 g/mol
n(K2S) = m/M =42 / 110 = 0.38 mol
n(K2S) = n(H2S) = 0.38 mol
M(H2S) = 34 g/mol
m теор (H2S) = n*M = 0.38 *34 = 12.92 g
m прак (H2S) = 12.92 * 78% / 100% = 10.08 g
ответ 10.08 г
Объяснение: