al 10.08 e) 9.02 is the PH of 0.06M HCl solution? What a) 1.18 b) 1.22...
calculate the [H+] in a solution that has a pH of 10.08. a) 3.9M b) 10.1M c) 1.2 x 10^-4 M d) 8.3 x 10^-11 M e) none of these
What is the pH of a 0.055 M solution of sodium cyanide? The Ka value for hydrocyanic acid is 6.2 x 10-10. Select one: a. 10.08 b. 8.77 c. 10.97 d. 5.23 e. 3.03 What is the pH of a mixture containing 0.33 M HNO2 and 0.20 M NaNO2? (Ka for HNO2 = 4.5 x 10-4) Select one: a. 7.8 b. 3.57 c. 3.13 d. 1.22 e. 3.35 What is the molar solubility of Zn2+ in a solution that is...
a. Calculate the pH of 200 mL of a 1.50 M solution of HCl? b. What mass of LiOH must be added to 750.0 mL of 0.0550 M HCl to produce a solution having a pOH of 11.500? c. A chemist had 2.000 L of a 0.00120 M KOH solution. What mass of HCl(g) would have to be added to the KOH solution to produce a solution having a pH of 10.875?
What concentration of HCl will have a pH of 5.0? b) What concentration of acetic acid will have a pH of 5.0? (For acetic acid, pKa=4.76) c) What concentration of phosphoric acid will have a pH of 5.0? (For H3PO4, pKa1 = 2.12, pKa2 = 7.21, pKa3 =12.32) d) What is the pH of a 10 mM solution of phosphoric acid? e) How much 1.0 M NaOH must be added to 100 ml of 10 mM H3PO4 to raise the...
A buffer solution contains NH3 0.20 M and NH4 + 0.30 M. Calculate the pH after 2.0 mmol of HCl is added to that solution. The volume of the solution is 50.0 mL and pKa (NH4 +) = 9.25 A 4.89 B. 8.92 C. 9.02 D. 9.07 E 9.58
Calculate the pH of 0.03M Ba(OH)2. a. 10.78 b. 12.78 c. 2.78 d. 1.22 e. 11.78
(b) Another HCl solution is labeled -0.1 M. What do we know about the pH of this solution? (C) Suppose this sample is tested and the pH meter reads 0.87. Is there a problem with the pH meter or its calibration? Explain. (d) Suppose this same sample is tested and the pH meter reads 2.94. What should you do? 5. A titration of a 20.00 mL sample of 0.1097 M HCl requires 18.86 mL of NaOH to reach the equivalence...
please explain how the reaction works for my understanding to arrive at the final answer of PH=2.14. thank you. For next class: Question: what is the final pH when 10 mL of 1M HCl is added to 1L of 0.01M of phosphate buffer at pH 7.2? K-2.14 pK,c)-7.20 2-P-124 For next class: Question: what is the final pH when 10 mL of 1M HCl is added to 1L of 0.01M of phosphate buffer at pH 7.2? K-2.14 pK,c)-7.20 2-P-124
(A) A solution has a hydroxide concentration of 122.846 mM. What is the pH? (B)Calculate the pH of a 252.85 μM solution of HNO3 (C)Calculate the pH of a 4.193 μM solution of KOH. (D)Determine the pH of a 0.0302 mM solution of Mg(OH)2 (E)What concentration of HCl is needed to have a solution with a pH = 3.52? Report your answer in mM.
5. Calculate pH a) 115mg of NaOH dissolved in water to make 180mL solution. Calculate pH. MW= 39.9971 b) 200mg of HCl dissolved in water to make 50mL solution. Calculate pH. MW= 36.46 c) Kb=2.14*10-6 C4H8ONH=1.2M