The solution involve the chemical reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl) followed by an ionic equation then a net ionic equation. The concept of spectator ions in addressed. The question to be answered is found below. 1. For the reaction between sodium hydroxide and hydrochloric acid
Calculate the pH of the solution when 0.1 M sodium hydroxide (NaOH) is titrated with a 25.0 mL hydrochloric acid (HCl) at the following stages of the titration. a) 15.0 mL of the sodium hydroxide solution added b) 25.0 mL of the sodium hydroxide solution added c) 35.0 mL of the sodium hydroxide solution added
Problem 1 What is the electromotive force E at 25 degrees C of the cell Pt(s) | H2(g. 1 bar) | H2SO4(aq. 0.007 molL^-1) | CrSO4(s) | Cr(s) ? Is the cell correctly written? Assume that the Debye - Huckel limiting law is applicable in these circumstances. Please refer to the attachment.
Determine the pH of a 1.0 L of the buffer that is 0.50 M in NH3 and 0.20 M in NH4Cl after the addition of 0.010 mol of NaOH. Kb = 1.8 x 10^(-5) for NH3.
1. Find the pH of 0.050 M solution of H2CO3 2. Find the pH and [SO4^(2-)] of a 0.0075 M sulfuric acid solution
The following chemical equation and equilibrium constant at 25 degrees Celsius : 2 COF2 (g) == CO2 (g) + CF4 (g) K = 2.2 * 10^6 The equilibrium constant for the following reaction at 25 degrees C: 2 CO2 (g) + 2CF4 (g) == 4COF2 (g). K =?
Compare masses of alka seltzer and water before and after the reaction.
Given: - we have a 1 Molar solution of Na2CO3 in water at an ~ pH of 8.0 - we add small amounts of H2SO4 and pH is reduced to 7.0, then 6.0, then 5.0 How do I calculate the mass of sulfuric acid needed to make the above change in pH happen?
The effluent from a pulp and paper operation has a COD of 209 ppm and a BOD of 4.9 ppm. a) What can you conclude about the nature of the organic compounds in the effluent from the values of COD and BOD? b) What volume of 0.050 M K2Cr2O7 would be required to completely oxidize the organics in a 50.0 mL sample of effluent?
Write balanced molecular and net ionic equations for the reactions of a) m a) hydrochloric acid with nickel b) dilute sulfuric acid with iron c) hydrobromic acid with magnesium d) acetic acid,HC2H3O2 with zinc Hard water contains Ca2+, Mg2+, and Fe2+, which interfere with the action of soap and leave an insoluble coating
A major source of air pollution years ago was the metals industry. One common process involved "roasting" metal sulfides in the air: 2 PbS(s) + 3 O_2(g) --> 2 PbO(s) + 2 SO_2(g) If you heat 2.5 mol of PbS(s) in the air, what amount of O_2(g) is required for a complete reaction? What amounts of PbO(s) and SO_2(g) are expe
Example: Balance the following equation: ___ Cu + ___ O? ----> ___ Cu?O You should get the following: 4Cu + O? ----> 2Cu?O You can report: 4,1,2 Balance these equations: ___ Na?PO? + ___ KOH --> ___ NaOH + ___ K?PO? ___ P? + ___ O? --> ___ P?O? ___ Pb(OH)? + ___ HCl --> ___ H?O + ___ PbCl? ___ AlBr
Please see attachment. 7/2.2 8.00 of are dissolved in water to make 2.00 of solution. What is the concentration of hydronium ions, , in this solution? = 7/3.2 Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid. What is the molar concentration of in a cola that
7/1.2) When solvent molecules surround solute molecules, the process is known as solvation. When water is the solvent used, the process is known as hydration. Recall that hydra means "water." Write the balanced equation for hydration of CuSO4. Indicate the physical states using the abbreviation (s), (l), or (g) for solid, liq
A 40-year-old manager, at a prominent legal firm in L.A., experiences abdominal pain post lunch. He goes to the restroom a couple of times, but continues to experience pain and cramps. He eventually decides to get himself examined. While questioning him, you learn that he consumed two bottles of beer at lunch. The alcohol (ethyl
Man drinks 2 bottles of beer alcohol content in a 12 oz bottle is 5%. mans weight is 150 pounds calculate the percentage of alcohol in the body state the chemical reaction that took place in the body identiry the substance produced in the liver that helps catalyze this reaction
See the attached homework document! We are asked to determine the impact of adding the referenced compounds to water and then predicting pH. It is all explained in the attached. Please help to understand the details of the dissociation and solubility product reactions in a step by step manner. Intuitively, I would predict
I require complete structural diagrams for the following compounds: 1) 2 ethyl, 3 methyl hexanol 2) N-methyl-N-phenyl butamide 3) 4,4 dimethyl pentanol 4) 3,4 dimethylhepatanoic acid 5) 3-amino, 3 methyl, 1 hexene.
For your most exact titration, record the following: (a) Volume of NaOH solution in the burette at the start (mL): The volume of NaOH solution in the burette at the start was 50 mL. (b) Volume of NaOH solution in the burette at the end (mL): The volume of NaOH solution in the burette at the end was 33.65 mL. (c) Volume
State three examples each of acids, bases, and salts commonly used in therapeutic processes. From the examples you state, select one acid, one base, and one salt and describe how and where they are used in therapeutic processes. Please note that your examples should not duplicate those already shared in your readings.
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals? Why? In which situations are these chemical reactions useful to healthcare professionals?
4.2 A 55-year-old woman visits a popular eatery for lunch. She orders a cheese and bacon pizza with extra cheese and has about 3 large glasses of cola (ph value 3). On the way back home, she experiences heartburn and abdominal pain, and has difficulty breathing. She drinks a lot of water and has to consume milk of magnesia (p
1. Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. A. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3? Show your solution.
What is the PH at equivalence point when 25ml of 0.100M HClO is titrated with 0.200M KOH ..ka HClO=2.9*10^-8
1. Equal molar amounts of hydrochloric acid and potassium hydroxide are mixed together in water. Is the resulting solution acidic, basic, or neutral? 2. Equal molar amounts of hypochlorous acid and sodium cyanide are mixed together in water. Is the resulting solution acidic, basic, or neutral? Ka hypochlorous acid = 3.5
Here is the question: Q: Show with the aid of a form of the Nernst equation that when using a pH sensitive glass electrode and reference electrode that the measured potential is proportional to pH. This is the answer I have: Nernst equation: E = E ° - 0.059/n * log Q Q is the reaction quotient, active mass of pro
Please help with the given problems: 1. Which one is a weak monoprotic acid: benzoic acid, perchloric acid, oxalic acid , sulfurous acid? 2. What is the pOH of a 0.0130 M aqueous pyridine solution? 3. What is the pH of a 0.150 M aqueous solution of ammonia? 4. What is the hydronium ion concentration in a 0.100 M h
Determine the pH of each of the following solutions. I only have the Ka solutions for two and the Kb for the other. a) 0.125 M hypochlorus acid Ka: 3.0x10^-8 b) 0.0085 M phenol Ka: 1.3x10^-10 c) 0.095 M hydroxylamine Kb: 1.1x10^-8
100.0 ml of 0.100 M acetic acid is placed in a flask and is titrated with 0.100 M sodium hydroxide . An appropriate indicator is used. Ka for acetic acid is 1.7 x 10 -5 a. when no NaOH has been added. b. after 25.0 ml of NaOH is added c. after 50.0 ml of NaOH is added d. after 75.0 ml of NaOH is added e. after 100
I would solve these using the assumption technique first, then solve using the quadratic if necessary. a) 0.1 M solution of a weak acid HA with Ka = 1 x 10 - 5 b) 0.01 M solution of a weak acid HX with Ka = 0.01