Odpowiedź:
K2O+ H2SO4--> K2SO4 + H2O
MgO+ 2HNO3---> Mg(NO3)2 + H2O
Na2O+ 2HCl--->2 NaCl+ H2O
3CaO+ 2H3PO4---> Ca3(PO4)2 +3 H2O
Al2O3+ 6HNO3---> 2Al(NO3)3 + 3H2O
Fe2O3+ 3H2S---> Fe2S3+3 H2O
Cr2O3+2 H3PO4---> 2CrPO4+3 H2O
Wyjaśnienie:
a) 39×2+16+1×2+32+16×4=78+16+2+32+64=198u
b)24+16+1+14+16×3=24+16+1+14+48=103u
c)23×2+16+1+35=46+16+1+35=98u
d)40+16+1×3+31+16×4=40+16+3+31+64=154u
e)27×2+16×3+1+14+16×3=54+48+1+14+48=165u
f)56×2+16×3+1×3+32=112+48+3+32=195u
g)52×2+16×3+1×3+31+16×4=104+48+3+31+64=250u
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Odpowiedź:
K2O+ H2SO4--> K2SO4 + H2O
MgO+ 2HNO3---> Mg(NO3)2 + H2O
Na2O+ 2HCl--->2 NaCl+ H2O
3CaO+ 2H3PO4---> Ca3(PO4)2 +3 H2O
Al2O3+ 6HNO3---> 2Al(NO3)3 + 3H2O
Fe2O3+ 3H2S---> Fe2S3+3 H2O
Cr2O3+2 H3PO4---> 2CrPO4+3 H2O
Wyjaśnienie:
Odpowiedź:
a) 39×2+16+1×2+32+16×4=78+16+2+32+64=198u
b)24+16+1+14+16×3=24+16+1+14+48=103u
c)23×2+16+1+35=46+16+1+35=98u
d)40+16+1×3+31+16×4=40+16+3+31+64=154u
e)27×2+16×3+1+14+16×3=54+48+1+14+48=165u
f)56×2+16×3+1×3+32=112+48+3+32=195u
g)52×2+16×3+1×3+31+16×4=104+48+3+31+64=250u