A. Standardization of NaOH Solution TRIAL (HCI] Volume Moles Moles Volume [NAOH] HCI HCI NaOH NaOH 0.1048 24.65 25.75 1 25.89 0./002 25.73 Average [NaOH]. 2.
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- 2) 1. Februurg 2, 2022 Lyonel Tanis CHM-0IL Section: C16130) Name: Date: Report Sheet: Characterization of a Weak Acid. UNKNOWN NUMBER A. Standardization of NaOH Solution TRIAL [HCI] Volume Moles Moles Volume [NAOH] HCI NaOH NaOH 24.65 25.75 0.1002 25.89 25.73 Average [NaOH]. B. Identification of the Unknown Acid 8. Determination of Molecular Weight TRIAL [NaOH] Volume Moles Moles Grams Molecula Unknown HOBN Unknown r Weight (g/mol) NaOH 0.2947 Lohe 24.07 1. 0.2943 2. 3 Average Molecular Weight (g/mol)Department of Chemistry University ofr Ghana School of Physical & Mathematical Science Equitibria in aqueous solutions (H=1, C-12, N=14, 0=16, F-19, Na = 23, Ba = 137.2, Ca = 40, S-32, CI-35.5, Br-80, Sr-88, 1=1271 1. Explain the following: a). Strength of an acid b). Percent fonization c). Titration curve dy. Equivalence point 2. In each of the reactions, identify the Lewis acid and base: a) AICIs (aq)+ CI (aq)- AICIlrlaq) b) Zn(OH) (aq)+ 20H (ag) Arrange the substances in each of the following sets in order of incrensing acid strength. a) SiHa, PH3 H2S, HCI b). HCIOs, HBRO3, HIO; c). NH3, CH NH2 d). HBr, HF, HCI, HI 4. Arrange the substances in each of the following sets in order of increasing strength of Prønsted- Lowry base. a). NH3, NH2 5. How are acidic, basic and neutral solitions in water defined in terms of; a). [HO*] and [OH] 6 Calculate the volume of 0.025 M HCIO4 solution that would just neutralize 30.0 ml of 0.0100 M 1DaOHa solution. -Zn(OH), (aq) 3. b). OH, HS, C). Cl, I…Write the K, expressions for the following two reactions. 1st attempt l See Perio Part 1 Do not include states of matter, multiplication symbols, or extra spaces. Use brackets [] to indicate concentration. If the concentration of a substance should be "1", then do not include it in the expression. Complete the Kexpression for the weak acid behavior represented by НСООН (аg) + н(аg) +НСОО (ад) X x, = +, log. cos. K.
- Each value represents a different aqueous solution at 25 °C. Classify each solution as acidic, basic, or neutral. Acidic Basic Neutral Answer Bank H]= 1.0 x 10 pll=346 pOl - 541 OH |-26 x 10 pOll =831 pOll = 7.00 o|=98 x 10 " 1-63x 10 pll=10.38 I= 74 x 10 contectua help privecy polisy terma of uasV:YT نقطة واحدة is a group of materials or.. devices required to carry out . experiments apparatus labels carefully assistant هذا السؤال مطلوب öaalg äbäi Calculate the concentration of nitric acid solution with a volume of (2 ml) and a concentration (5M) from a * ? solution of a volume (5 ml) 4M 3M 2M 6M نقطة واحدة The bath contains. . that used in .boiling point experiment : IIIf K=2.25 & K,- 5.62 x 1010, Suppose 100 ml of 0.010M aqueous amine is extracted with 300ml of benzene. What will remain in aqueous sol" at (a) pH = 9 and (b) pH = 10.0 A. a. 48.6% b. 24.2% B. a. 29.2% b. 14.9% a. 28.9% b. 5.6% D. a64.6% b. 18.0% Beset Selection
- 3. Complete neutralization of 10 ml of phosphoric acid solution by NaOH 0.I N in the presence of phenol phthalein until the appearance of purple color (pH, = 9) 11 ml. of NaOH is consumed. (a) What is the concentration of phosphoric acid? (b) Calculate the indicator error. pk2.1 pK. - 7.2 pK - 124gA certain aqueous mmonoprotic acid has a percent ionizationn of G575 for a O. S0Z m Soution. Calaulati the acia ionization constant for the acd.3 How to Titrate: Lab Techniques Titration Titration Procedures: Add about 100mL of a 0.1 M NAOH solution to a 250mL beaker. 2. Obtain a buret and rinse with about 10 ml of the NaOH solution. 3. Fill the buret with NaOH and record starting volume to the nearest 1m" of a milliliter. 4. Measure out exactly 10.0 ml of HC in a graduated cylinder and add it to a 250mL Erlenmeyer flask along with 1 drop of phenolphthalein indicator. 5. Slowly add the NaOH to the flask with the acid and swirl. Continue adding the base until a color change (faint pink) occurs and remains for at least 10 seconds. This is the endpoint of this neutralization eaction. 6. Read and record the ending volume of NaOH in the buret, 7. Repeat steps 1 through 6 two more times for Trials 2 and 3. 8. Calculate the volume of base added in each trial. 9. Use the volume of base added and the volume of acid added to calculate the molarity of the acid for each trial. 10. Calculate the average molarity of the acid. 11. Calculate…
- At 25°C, what are the molar H3ot and OH concentrations in a 0.0360 M CG H; COOH (K, (C,H; COOH)= 6.28 x 10)? M %3D [OH ]- %3D M bo.0360 M HN3 (K, (HN3)= 2.2 x 10 )? 1--HO] C0.240 M hydroxylamine hydrochloride (K, (NH,OH)= 9.09 x 10 )? [1,0*] -[ (OH |-Ex. 13-5. A 50.00-mL of an HCl solution required 29.71 mL of 0.01963 M Ba(OH)2 to reach an end point with bromocresol green indicator. Calculate the molarity of the HCl. Ва(ОН)2 + 2HCІ- ВаCl, + 2H-0aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IvTqeviKFP6W0cqJcWJdIACROQwyw24GWHInbXelvw ermolecula... 18.3 Gibbs Free E... O Acids and Bases Calculating the pH of a dilute acid solution m 18.3 Gibbs Free E... Explanation The acid dissociation of benzoic acid (C.H.CO₂H) is 6.3 × 105. Calculate the pH of a 8.6 x 10M aqueous solution of benzoic acid. Round your answer to 2 decimal places. Check X 5.3 Enthalpies of... S 18.5 Gibbs Free E + © 2023 McGraw Hill LLC. All Righ They will because yo stuff doesn