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Calculate the buffer capacity of 1L solution of : (i)0.1MCH_(3)COOH and 0.1MCH_(3)COONa (ii) 0.2MCH_(3)COOH and 0.2MCH_(3)COONa Given:pK_(a)(CH_(3)COOH)=4.74 Which will be a better buffer? |
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Answer» SOLUTION :Buffer capcaity =`(2.303(a+x)(b-x))/(a+b)~~(2.303ab)/(a+b)xltlta,b` Buffer capacity =`(0.1xx0.1xx2.303)/(0.1+0.1)=0.11515` Buffer capacity `=(0.2xx0.2xx2.303)/(0.2+0.2)=0.2303` Second buffer solution (having GREATER buffer CAPCITY )can be called BUTTER buffer. |
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