Acid can dissociate in solution, which characterized by dissociation constant (Ka). Polyprotic acids can dissociate multiple times, which associated by multiple dissociation constant (Kal, Ka2, Ka3 etc.) CO2 dissolve in water forms carbonic acid H2CO3 CO2 (aq) = H2CO3 (aq) K-1.7x103 H2CO3 (aq) = HCO3 (aq) +H'(aq) Kal-2.5x104 HCO3 (aq) = CO3 (aq) + H Ka2 5.0x10-11 (aq) (a) For soda water, the CO2 concentration is 6g/L and the pH is 4. Calculate the equilibrium molar concentration of HCO; and CO32- (b) It is known that the CO2 concentration in air is 387ppm, and the CO2 Henry constant KH= 29.4 atm/mol. The second dissociation is negligible. Calculate the pH of the pure water after equilibrium in air 啟用

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(1) Br2 CC,

Provide the structure of the major product for the following reaction H₂C -0- I -0 0 OD III H₂C CH,Br FeBR, ميلك N CH I IV CH₂ -CH₂

Which of the following is a (011) plane? (A) (B) (C) y A C None of the above B. O OO

d. NO₂ H₂ Pd/C

7. A procedure for measuring the amount of creatinine in blood was applied to a standard blood sample and the following results were produced: 0.787, 0.812, 0.796, 0.739, 0.802, and 0.823 mg/dL.  a) Can any of the data points be rejected by the Grubbs test? b) What is the 95% confidence interval for the data?