дано
m(H3PO4) = 29.6 g
m(KOH) = 22.4 g
m(К3PO4) - ?
H3PO4+3KOH-->K3PO4+3H2O
M(H3PO4) = 98 g/mol
n(H3PO4) = m/M = 29.6 / 98 = 0.3 mol
M(KOH) = 56 g/mol
n(KOH) = m/M = 22.4 / 56 = 0.4 mol
n(H3PO4) < n(KOH)
n(H3PO4) = n(K3PO4) = 0.3 mol
M(K3PO4) = 212 g/mol
m(K3PO4) = n*M = 0.3 * 212 = 63.6 g
ответ 63.6 г
Объяснение:
дано
m(H3PO4) = 29.6 g
m(KOH) = 22.4 g
m(К3PO4) - ?
H3PO4+3KOH-->K3PO4+3H2O
M(H3PO4) = 98 g/mol
n(H3PO4) = m/M = 29.6 / 98 = 0.3 mol
M(KOH) = 56 g/mol
n(KOH) = m/M = 22.4 / 56 = 0.4 mol
n(H3PO4) < n(KOH)
n(H3PO4) = n(K3PO4) = 0.3 mol
M(K3PO4) = 212 g/mol
m(K3PO4) = n*M = 0.3 * 212 = 63.6 g
ответ 63.6 г
Объяснение: