As it is weak acid
pKa = 9.24
pH = 1/2(pKa -logC)
= 1/2(9.24-log(4.6))
= 4.3
So pH of boric acid is 4.3
< 29 30 31 32 33 34 35 36 The acid dissociation constant of boric acid...
The acid dissociation constant K of boric acid (H,BO,) is 5.8 x 10-40. Calculate the pH of a 3.6 M solution of boric acid. Round your answer to 1 decimal place. pH = 0 X 5 ?
(29) - 30 31 32 33 34 35 36 37 38 39 40 A chemist dissolves 355. mg of pure perchloric acid in enough water to make up 230. ml. of solution. Calculate the pH of the solution. Round your answer to 3 significant decimal places. x 5 ?
The acid dissociation constant K of boric acid (H,BO2) is 5.8 x 100. Calculate the pH of a 4.3 M solution of boric acid. Round your answer to 1 decimal plac pH = 0 I Don't Know Submit
29 31 32 33 34 35 36 37 38 39 40 Calculate the pH at 25 °C of a 0.72 M solution of lidocaine HCI (CH,,NONH,CI). Note that lidocaine (C, H, NONH) is a weak base with a pk, of 7.94 Round your answer to 1 decimal place. pH = 10] x 5 ?
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 QUESTIONY An increase in the price of oil shifts the short-run Phillips curve right and the unemployment rate rises. short-run Phillips curve right and the unemployment rate falls. short-run Phillips curve left and the unemployment rate falls. short-run Phillips curve left and the unemployment rate rises. QUESTION 10 In the short run, an increase in government purchases increases real GDP...
Determination of the Dissociation Constant ka, of a Weak Acid Part A Phosphoric acid is a triprotic acid (three ionizable hydrogens). The values of its stepwise ionization constants are Kit = 75 x 10°,K6.2 x10, and K. = 4.2 x 10" 1. Write the chemical equation for the first ionization reaction of phosphoric acid with water. 2. Write the equilibrium constant expression Kat for this reaction. 3. What would be the pH of a solution when [H,PO) -(H.PO:] Part B...
Previous 31 32 33 34 35 36 37 38 Next Question 34 of 38 (1 point) Records indicate that t months after the beginning of the year, the price of ground beef in local supermarkets was P(t)= 0.12t+ - 0.8t + 7 dollars per pound. What was the average price of ground beef during the first 7 months of the year? The average price of ground beef for the first 7 months is $ per pound.
33 46 48 21 30 32 10 31 20 29 A survey of 25 randomly selected customers found the ages shown (in years). The mean is 31.76 years and the standard deviation is 10.37 years. a) Construct a 98 % confidence interval for the mean age of all customers, assuming that the assumptions and conditions for the confidence 20 38 40 35 40 interval have been met. 22 37 10 41 26 b) How large is the margin of error?...
23 24 25 26 27 28 29 30 - 31 32 33 34 In the Periodic Table below, shade all the elements for which the neutral atom has a valence electron configuration of n s mp', where n stands for an integer. H Li Be Na Mg K Ca Sc Rb Sr Y Cs Ba La Fr Ra Ac He BC N O F Ne Al Si P S Clar TV Cr Mn Fe Co Ni Cu Zn Ga Ge...