M=n*M=0.3 моль*174 г/моль=52.2 грамма
M(K2SO4)=39*2=78+32=110+16*4=110+64=174 г/моль
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P2 +3 O3 -2 ,K+1Br -1,HF H +1, F -1,<span>Ca3(PO4)2 </span><span>Ca-+2 </span><span>P+5 </span><span>O-2 </span>
Ca3P2=7.28/182=0.04mol
0.04mol xmol
Ca3P2+6H2O=2PH3+3Ca(OH)2
1mol 2mol
x=0.08mol
0.08mol x²mol
2PH3+4O2=P2O5+3H2O
2mol 1mol
x²=0.04mol
mKOH=41.65·1.21·0.2=10g
nKOH=10/56=0.18mol- v isbytke
0.04mol x³mol x⁴mol
P2O5+6KOH=2K3PO4+3H2O
1mol 2mol 3mol
x³=0.04·2/1=0.08mol
mK3PO4=0.08·212=16.96g
x⁴=0.04·3/1=0.12mol
mH2O=0.12·18=2.16g