Question 2 & 3 please 2. (10 points) A 0.185 M solution of a weak acid HA has a pH of 2.95. What is the acid dissociation constant (Ka) for this acid? (hint: ICE Box and x is small-start by reacting HA with water) (10 points) A solution that is 0.220 M HF and 0.240 M NaF reacts to produce...
A barium hydroxide solution is prepared by dissolving 3.06 g of Ba(OH), in water to make 75.0 mL of solution. What is the concentration of the solution in units of molarity? concentration: M The barium hydroxide solution is used to titrate a perchloric acid solution of unknown concentration. Write a balanced chemical equation to represent the reaction between barium hydroxide...
Need help with 3 and 4 on calculations. some info is on top of the page Data Sheet for Lab #10 Name: Partner: Data/Observations: Volume of (NH), SO, used: Suomi initial pH of (NH4)2SO4 6.79 Equivalence vol. of NaOH: 20.00 pH at half-equivalence: 10,63 Balanced Chemical Equation: 1. Write the balanced equation for the reaction of ammonium sulfate and sodium...
What is the pH of the following solutions? 1)a solution that is 5.4?10−2 M in HClO4 and 3.0?10−2 M in HCl 2)a solution that is 1.80% HCl by mass (Assume a density of 1.01g/mL for the solution.) Please help! I am so confused!
Writing polyprotic acid and base reactions: 1. Write all the dissociations for the three polyprotic acids: H_2CO_3, H_3AsO_4, H_3PO_4. Match the appropriate Ka1, Ka2, Ka3 values to the dissociation reaction. 2. Identify all the species in each of the reactions as either an acid, a base, or amphoteric. Imagine putting NaH_2AsO_4 in solution. This is a salt. Describe, using chemical...
A 98.0 mL sample of 0.0200 M HClO4 is titrated with 0.0400 M RbOH solution. Calculate the pH after the following volumes of base have been added. (a) 24.5 mL pH = (b) 47.0 mL pH = (c) 49.0 mL pH = (d) 51.0 mL pH = (e) 77.4 mL pH =
Dont need (a) or (b) thank you You have a 0.025 L solution of piperazine (perhydro-1,4-diazine), a weak dibasic base. The K, values for its conjugate acid are 4.65*10 and 1.86*10-10 (in a solution with an ionic strength of zero). You would like to know the concentration of your solution and decide to titrate with HCl. You make a 0.10...
13.) What is the pH of a solution if 25.0 mL of 0.250 M HClO4 is titrated with 25.0 mL of 0.475 M Ba(OH)2? a. 2.30 b. 10.32 c. 2.73 d. 13.54 e. 7.00
Please Answer ALL. Thanks. a Write a balanced chemical equation for the acid dissociation reaction of hypochlorous acid (HOCI) in water. (1 mark) b Write the Ka expression for Hoci based on the above equation. (1 mark) c The pH of a solution of hypochlorous acid (HOC) in water was found to be 3.9. What is the concentration of...
A barium hydroxide solution is prepared by dissolving 1.91 g1.91 g of Ba(OH)2Ba(OH)2 in water to make 25.2 mL25.2 mL of solution. What is the concentration of the solution in units of molarity? concentration: M The barium hydroxide solution is used to titrate a perchloric acid solution of unknown concentration. Write a balanced chemical equation to represent the reaction between...