H2SO4 = acid sulfuric
rap. atomic:
H: S: O = 2: 1: 4
raport de masa
avem 2x1g H + 32g S + 4x16g O
H: S: O = 2: 32: 64 /:2 = 1: 16: 32
compozitie procentuala:
M.H2SO4 = 2+32+64 = 98 g/mol
98g H2SO4 ........ 2g H ......... 32g S .......... 64g O
100% ................... a% .............. b% ................ c%
= 2,04% H = 32,65% S = 65,31% O
Ca(OH)2 = hidroxid de calciu
raport atomic
Ca: O: H = 1: 2: 2
raport de masa
avem 40g Ca + 2x1g H + 2x16g O
Ca: H: O = 40: 2: 32 /:2 = 20: 1: 16
compozitie procentuala
M.Ca(OH)2 = 40+2(16+1) = 74 g/mol
74g Ca(OH)2 .......... 40g Ca ......... 2g H ...........32g O
100% ........................ a% ................... b% ................ c%
= 54,05% Ca = 2,7% H = 43,24% O
