a. CoCl2₂ · 6 H2₂ masa CoCl₂ = 59 + 71 = 130[g] masa 6H2₂ = 108[g] masa hydratu: 108 + 130 = 238[g] 238g --- 100% 108g ---- x x = 108g × 100% : 238g x = 45,37 % b. CaSO₄ · 2 H₂O masa CaSO₄ = 136[g] masa 2 H₂O = 36 [g] masa hydratu = 172 [g] 172g ---- 100% 36g ------ x x = 36g × 100% : 172g x = 20,93 %
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a.
CoCl2₂ · 6 H2₂
masa CoCl₂ = 59 + 71 = 130[g]
masa 6H2₂ = 108[g]
masa hydratu: 108 + 130 = 238[g]
238g --- 100%
108g ---- x
x = 108g × 100% : 238g
x = 45,37 %
b.
CaSO₄ · 2 H₂O
masa CaSO₄ = 136[g]
masa 2 H₂O = 36 [g]
masa hydratu = 172 [g]
172g ---- 100%
36g ------ x
x = 36g × 100% : 172g
x = 20,93 %