Question

Scrie 20 de exemple de substanțe(5-oxizi,5-acizi,5-baze,5-săruri) calculați masele moleculare.
Ajutooor repede pls!

Answer 1

acizi- hcl,h2so4, hno3,h3po4, h2s, h2co3
oxizi - CaO , al2o3 , so3, no, co,
bAze- naoh, fe(oh)2 ,fe(oh)3, cu(oh)2
săruri - nacl, na2so4, nahso4

Answer 2

Oxizi
1)C+O2=CO2(Ox.carbon(IV))  Mr(CO2)=44g/mol
2)2SO2+O2=2SO3(Ox.sulf(VI) Mr(SO3)=80g/mol
3)Ba+O2=BaO(Ox.de bariu) Mr(BaO)=153g/mol
42Mg+O2=MgO(Ox.de megneziu) Mr(MgO)=40g/mol
5)2Al+3O2=2Al2O3(Ox.de Aluminiu) MrAL2O3)=102g/mol
Acizi
1)CO2+H2O=H2CO3(carbonic) Mr(H2CO3)=62g/mol
2)2SO3+H2O=H2SO4(sulfuric) Mr(H2SO4)=98g/mol
3)2SO2+H2O=H2SO3(sulfuros) Mr(H2SO3)=82g/mol
4)S+H2O=H2S(sulfhidric) Mr(H2S)=34g/mol
5)2P2O5+H2O=H3PO4(fosforic) Mr(H3PO4)=98g/mol
Baze
1)BaO+H2O=Ba(OH)2(hridroxid de brom) Mr(Ba(OH)2)=171g/mol
2)2Al2O3+H2O=Al(OH)3(hidroxid de aluminiu) Mr(Al(OH)3)=78g/mol
3)FeO+H2O=Fe(OH)2(hidrox de fier (II) Mr(Fe(OH)2=90g/mol
4)Fe2O3+H2O=Fe(OH)3(de fier (III) Mr(Fe(OH)3=107g/mol
5)Zn+H2O=Zn(OH)2(de zinc) Mr(Zn(OH)2=99g/mol
Sare
1)Zn+H2SO4=ZnSO4(sulfat de zinc) Mr(ZnSO4)=161g/mol
2)Al+2HCl=AlCl3(clurura de aluminiu)Mr(AlCl3)=133,5g/mol
3)Pb+HNO3=Pb(NO3)2(nitrat de plumb) Mr(Pb(NO3)2=331g/mol
4)Mg+2HCl=MgCl2(clorura de mangan)Mr(MgCl2)=95g/mol
5)Cr+2HCl=2CrCl(clorura de crom) Mr(CrCl)=87,5g/mol