3. A mesh cap filter is placed in a pipe with lowing water. The shape of the filter can be modeled using the surface C given by the paraboloid+ y2 for z between 0 and 1 and then "cappesd off" by the plane 1, and the velocity of the water can be modeled using the vector field If the net...
15. (25 pts) If 50 mL of 0.20 M benzoic acid (K, = 6.5 x 10) is titrated with 0.25 M NaOH, what is the pH after 0 ml, 10 ml, 20 ml, 40 ml and 50 ml of base have been added? (You may use the approximation.). BE SURE TO SHOW ALL CALCULATIONS.
IV. Acid-Base Titration (15 points). A 50 mL of 0.200 M HNO2, (Ka= 4.0 x 10) solution is titrated with 0.200 M NaOH. Find the pH before titration and after 25 mL, 50 mL, and 60 mL of NaOH has been added.
A certain weak base B has a base-ionization constant Kb of 6.6 × 10–4 at 25°C. If strong acid is added to a solution of B, at what pH will [B] = [BH+]? Hint: This is a buffers problem. Select one: a. 8.5 b. 7.0 c. 10.8 d. 3.2
A 20.0-mL sample of 0.150 MKOH is titrated with 0.125 MHClO4 solution. Calculate the pH after the following volumes of acid have been added. 20.0 mL 22.0 mL 24.0 mL 25.5 mL 32.0 mL express your answers using two decimal places
2 The artificial sweetener Saccharin (shown below) is a weak acid (pk.-2.32 at 25°C), It is used in its salt form, sodium saccharide. Calculate the pH of 0.10 M solution of sodium saccharide at 25°C. (11 pts.) Na* + H2O NaOH + Sodium saccharide Saccharine
Calculate the pH of a 0.40 M solution of sodium acetate (NaCH3COO) given that the Ka of acetic acid (CH3COOH) is 1.8 x 10 5. Ο Α. 2.57 Ο Ο Β. 9.17 Ο C.9.26 Ο Ο D. 4.83 Ο Ο Ε. 11.43
Question 3 If 260.0mL of 200M of a HA, weak acid (ka-76x10is titrated with 3.40M NaOH. Predict the correct pH less than 7 greater than 7. or equal to 7) of the solution at the equivalence point of the titration? equal to 7 Less than 7 Greater than 7
Be sure to answer all parts. Find the pH during the titration of 20.00 mL of 0.1000 M butanoic acid, CH3CH2CH2COOH (Ka = 1.54 × 10−5), with 0.1000 M NaOH solution after the following additions of titrant. A) 13.0 mL B) 20.20 mL C) 29.0 mL
1. calculate the pH of a solution with [H3O+]= 2.4x10^-5M 2. the pOH for a KOH solution is 4.5, determine [H+] for the solution. 3. A 15.00 mL sample of NaOH solution of unknown concentration required 17.88 mL of 0.1053 M H2SO4 solution to reach the equivalent point in a titratiom. what is the concentration of the NaPH Solution?