Ответ:
дано
m(ppa CH3COOH) = 200 g
W(CH3COOH) = 40 %
+V(H2O) = 300 mL
-------------------------------
W1(CH3COOH)-?
m(CH3COOH) =200 * 40% / 100% = 80 g
m(H2O) = m(ppa CH3COOH) - m(CH3COOH) = 200 - 80 = 120 g
p(H2O) = 1 g/mL
m1(H2O) = p(H2O) * V(H2O) = 300 * 1 = 300 g
m1(ppa CH3COOH) = m(ppa CH3COOH) + m1(H2O) = 200 + 300 = 500 g
W1(CH3COOH) = m(CH3COOH) / m1(ppa CH3COOH)*100%
W1(CH3COOH)= 120 / 500 * 100% = 24 %
ответ 24 %
Объяснение:
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Answers & Comments
Ответ:
дано
m(ppa CH3COOH) = 200 g
W(CH3COOH) = 40 %
+V(H2O) = 300 mL
-------------------------------
W1(CH3COOH)-?
m(CH3COOH) =200 * 40% / 100% = 80 g
m(H2O) = m(ppa CH3COOH) - m(CH3COOH) = 200 - 80 = 120 g
p(H2O) = 1 g/mL
m1(H2O) = p(H2O) * V(H2O) = 300 * 1 = 300 g
m1(ppa CH3COOH) = m(ppa CH3COOH) + m1(H2O) = 200 + 300 = 500 g
W1(CH3COOH) = m(CH3COOH) / m1(ppa CH3COOH)*100%
W1(CH3COOH)= 120 / 500 * 100% = 24 %
ответ 24 %
Объяснение: