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ee Pee es oe, , ee ‘a oak, | HC!, with (K, = 10°) is titrated with a strong eats Q, point, pH of the solutionis = ee ee, a 9+1, ‘#10g3 (by) S ~ log (c) 9 - 1088 (9 *ies8, at will be the pH at equivalence point during the titration, of CH,COONa with 0.2 (M) solution of HCl? K, of CH,;COO, , (a) 3 - log [2 (b) 3 + log 2 (c) 3 ~ log 2, , 11. 20 ml of a weak acid (HA) requires 20 ml 0.2 (M) NaOH for, PH of solution upon addition of 10 ml of 0.2 (M) NaOH to 25, is 5.8, the pK, of the weak acid is, , , , , (d) 3 + log2, , complete neutralizatior, ml of above solution of, , (a) 6.1 (b) 5.8 (c} 5.98 (4) oe 4 ,, 12. The pH of a mixture V (ml) of 0.2 (M) NaOH and 50 ml of 0.2 (M) CH,COOH is 4.74,, , value of Vis_ [pK, of CH,COO- = 9.26], , (a) 50 ml (b) 25 ml (c) 10 ml ee nae, , , , , , log 1=0 log 2 = 0.30 log 3 = 0.48 log 4 = 0.60, , log 5 = 0.70 log 6 = 0.78 log 7 = 0.84 log 8 = 0.90, , log 10=1 log 11 = 1.04 log 13 = 1.11 log 17 = 1.23, log 19 = 1.27 log 23 = 1.36 log 29 = 1.46 log 31 = 1.49, log 37 = 1.56 log 41 = 1.61 log 43 = 1.63 log 47 = 1.67, log 53 = 1.72 log 59 = 1.77 log 61 = 1.78 log 67 = 1.82, log 71 = 1.85 log 73 = 1.86 log 79 = 1.89 log 83 = 1.91, log 87 = 1.93 log 89 = 1.95 log 91 = 1.96 log 97 = 1.98, , , , , , CHEMISTRY POINT Keshra Cottage, N-18, L.|.C. Colony, Near Jaleshwar Mahadeo Mani, , Back side of Kendriya Vidyalaya, Kankarbagh, Patna-20, , 710 Oded at ad Korres)