Sebanyak 750ml larutan penyangga berasal dari campuran larutan CH3COOH 0,3 M dan larutan KOH 0,2 M mempunyai ph=5-log 3,2 .Perbandingan volume CH3COOH dan
KOH yang dicampurkan adalah....ml(Ka=1,6 x 10^-5
a.500;250
b.250;700
c.300;450
d.450;300
e.375;375
KOH yang dicampurkan adalah....ml(Ka=1,6 x 10^-5
a.500;250
b.250;700
c.300;450
d.450;300
e.375;375
fatihahalhusna
![$ \begin {align}[H^+]&=K_a\times\frac{0,3V_1-0,2V_2}{0,2V_2}\\3,2\times10^{-5}&=1,6\times10^{-5}\times\frac{3V_1-2V_2}{2V_2}\\4V_2&=3V_1-2V_2\\2V_2&=V_1\\\\\\V_1+V_2&=750\\2V_2+V_2&=750\\V_2&=250\ mL\\V_1&=500\ mL~~~~~(Jawab:\bold{A}) \end](https://tex.z-dn.net/?f=%24+%5Cbegin+%7Balign%7D%5BH%5E%2B%5D%26%3DK_a%5Ctimes%5Cfrac%7B0%2C3V_1-0%2C2V_2%7D%7B0%2C2V_2%7D%5C%5C3%2C2%5Ctimes10%5E%7B-5%7D%26%3D1%2C6%5Ctimes10%5E%7B-5%7D%5Ctimes%5Cfrac%7B3V_1-2V_2%7D%7B2V_2%7D%5C%5C4V_2%26%3D3V_1-2V_2%5C%5C2V_2%26%3DV_1%5C%5C%5C%5C%5C%5CV_1%2BV_2%26%3D750%5C%5C2V_2%2BV_2%26%3D750%5C%5CV_2%26%3D250%5C+mL%5C%5CV_1%26%3D500%5C+mL%7E%7E%7E%7E%7E%28Jawab%3A%5Cbold%7BA%7D%29%0A%5Cend "$ \begin {align}[H^+]&=K_a\times\frac{0,3V_1-0,2V_2}{0,2V_2}\\3,2\times10^{-5}&=1,6\times10^{-5}\times\frac{3V_1-2V_2}{2V_2}\\4V_2&=3V_1-2V_2\\2V_2&=V_1\\\\\\V_1+V_2&=750\\2V_2+V_2&=750\\V_2&=250\ mL\\V_1&=500\ mL~~~~~(Jawab:\bold{A}) \end")
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