Captain Kirk of the Starship Enterprise has been told by his superiors that only a chemist can be trusted with the combination to the safe containing the dilithium crystals that power the ship. The combination is the pH of solution A described below, followed by the pH of solution C (e.g., if the pH's are 1.23 and 4.56, the combo would be 1-23-4-56). Solution A is 50.0 mL of 0.100 M HX. Solution B is a 0.500 M solution of NaX, with pH = 10.02. Solution C is solution A plus 15.0 mL of 0.250 M KOH. What is the combination?

Q: Calculate the pH of(a) a solution that is 0.250 M in sodium formate (HCOONa)and 0.100 M in formic…

A: (a). Given information; The initial concentration of formic acid (HCOOH) is 0.100 M The initial…

Q: A solution is prepared by adding 300 mL of 0.500 M NH3 and 100 mL of 0.500 M HCl. Assuming that the…

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Q: What is the pH of the solution that results from adding 59.8 mL of 0.150 M HCe to 22 mL of 0.650 M…

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Q: A solution is made by dissolving 0.0890  moles of Ba(OH)2 in enough water to make 615  mL of…

A:

Q: A solution is prepared by dissolving 5.1 g of NaOH in a total volume of 250 mL solution.Then 1.00 mL…

A: First we have to calculate molarity of NaOH in 250 ml

Q: A solution is prepared that is initially 0.092 M in methylamine (CH,NH,), a weak base, and 0.10 M in…

A: Given data: A solution is prepared that  initially contain 0.092 M in methylamine (CH3NH2 ),a weak…

Q: What is the pH of the solution obtained by mixing 35.00 mL of 0.250 M HCI and 35.00 mL of 0.125 M…

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Q: 80.0 mL of 0.30 M NaOH and 80.0 mL of 0.30 M HCl are mixed together. What is the approximate pH of…

A: Acid and base react with each other and form salt and water it is a neutralization reaction In this…

Q: Four solutions of an acid dissolved in water are sketched below, as if under a microscope so…

A: According to the Arrhenius theory, the substance that gives hydrogen ion H+ in the aqueous solution…

Q: A stock solution is made by dissolving X grams of KOH in water and making it up to the mark in a…

A: The solution which resists change in pH of the solution is called a buffer solution. The resistance…

Q: What is the pH of a solution that is prepared by adding 4.0 mL of 0.50 M NAOH(aq) and 4.0 mL of 0.40…

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Q: Q4 Which solution(s) showed the greatest change in pH? Why? Q5 Which solutions(s) showed little or…

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Q: The probe of the pH meter shown here is sitting in a beakerthat contains a clear liquid. (a) You are…

A: The probe of the pH meter shown here is sitting in a beakerthat contains a clear liquid.  (a) You…

Q: When answering this problem, report the answer with the appropriate number of significant figures…

A: Given: molarity of stock solution=M1=2.400×10-1Mvolume of stock solution=V1=5 mLvolume of new…

Q: 0.15 M aqueous solution of the weak base B at 25°C has pH of 8.88. The value of Kb for B is ______.

A: We will calculate the POH first than we will use the relation POH = 1/2(PKb - log C).

Q: A solution is prepared that is initially 0.24M in ammonia (NH,), a weak base, and 0.28M in ammonium…

A: Weak electrolytes are those which do not dissociate completely rather there occurs equilibrium…

Q: Find the pH of a KOH solution made by mixing 123 mg KOH with enough water to make 250 cm3 of…

A: Formula used:- pOH = 14-pH

Q: A solution is made by dissolving 22.3 g of HONH₃ClO₃ in 500.0 mL of water. Using Ka(HONH₃⁺) = 9.1 ×…

A: OHNH3ClO3 dissociates to give H+ ions in the solution. The net ionic equation is:

Q: A 0.020 M aqueous solution of a weak monoprotic base, B, has pH of 11.44. Calculate the value of Kb…

A: First write  Basic  medium reaction  B + H2O = BH+ + OH-

Q: A solution of dimethylamine is prepared by dissolving 1.3525 grams of dimethylamine in 25 mL ethanol…

A: Given: Mass of dimethylamine = 1.3525 g. And the final volume of the solution = 100.0 mL.

Q: The pH for 0.185 M solution of an unknown weak base, B, is 12.95. Determine the value of Kb for the…

A: pH = 12.95 pH = 12.95pOH = 14-pH=14-12.95=1.05 OH-=10-pOH=10-1.05=0.089 M

Q: 4.00 g KOH was added to the less basic solution in number 3. What will be the resulting pH of the…

A: Answer:- firstly the less basic solution is identified using  the concentration of hydroxide ions…

Q: Four solutions of an acid dissolved in water are sketched below, as if under a microscope so…

A: According to the Arrhenius theory, the substance that gives hydrogen ion H+ in the aqueous solution…

Q: What is the pH of a 50 cm3 KOH solution if the concentration of it is 0.0100 mol/dm3. How the pH is…

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Q: If 0.050 moles of gaseous HCl is bubbled in 1.0 liter of a solution that is 0.15 M in NH3 and 0.10 M…

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Q: Suppose a 0.10OM solution of each of the following substances is prepared. Rank the pH of the…

A: There are some substance :-  KF, NH4I ,HBr, NaCl, LiOH . We have to calculate the PH of the  0.100M…

Q: Butyric acid, C3H,COOH, has ionization constant of 1.54 x 10-5. a) Calculate the pH of 50.0 mL of a…

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Q: Butyric acid, C3H,COOH, has ionization constant of 1.54 x 10. a) Calculate the pH of 50.0 mL of a…

A: We have to predict the pH of acid and salt and pH upon mixing the solution.

Q: A solution of an unknown chemical has a pH of 9. Is this solution acidic or basic?

A: Given A solution of an unknown chemical has a pH of 9.

Q: To what volume should 100 mL of any weak 0.30 molar monobasic acid (HA) or mono-acidic base (BOH) be…

A: According to the Le Chatelier principle, adding water to equilibrium would cause equilibrium left to…

Q: An analytical chemist is titrating 88.9 mL of a 0.2700M solution of ammonia (NH3) with a 0.4900M…

A: Ammonia, NH3(aq) is a monoacidic weak base with pKb = 4.74 HIO3(aq) is a monoprotic strong acid.…

Q: What is the pH of a solution prepared by mixing 50.00mL of 0.10 M NH3 with 10.00 mL of 0.10 M NH4Cl?…

A: Given data is as follows:

Q: Normally, the volume of gastric acid in the human stomach ranges from 20. mL to 100. mL and a pH…

A: Given:  Volume of the solution= 20 mL to 100 mL The given pH range =1.5 to 3.5  For the minimum…

Q: Calculate the pH of the solution that results when 8.30 ml of  0.250M KOH is added to  35.0 mL of…

A: Introduction :  We have to calculate pH of solution .

Q: Calculate chloride buffered solutions with the following pH value (This problem requires values in…

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Q: A general chemistry student mixes together a solution of HF with a solution of NaF. If the resulting…

A: Acidic buffer solution :- A mixture of weak acid and its salt with strong base is called acidic…

Q: The drinking water for Bloomington, Indiana, comes from Lake Monroe, which has a calcium…

A: Solution -

Q: A solution in which phenolphthalein stays colorless. Does the property describe a solution that is…

A: Answer :-  In Acidic and neutral solution, phenolphthalein stays colorless. In Basic solution…

Q: pH of the blood was found to have a pH of −21. Is the acid strong, what is the [H+]? In other words,…

A: We can determine the hydrogen ion concentration from pH as below : pH = - log [H+] Or,  -pH = log…

Q: A1 liter solution is made by adding 0.5983 moles NaH2PO4 and 0.5456 moles NazHPO4. What will be the…

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Q: Can you please provide a much detailed computation for this question? from given, formula,…

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Q: You add 7.00 mL of 0.100 M NaOH to 50.00 mL of pure water, and to this mixture you then add 12.00 mL…

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Q: Clorazepate (abbreviated CZH, chemical formula C16H11CIN epilepsy. It is also a street drug known as…

A: As given in the question the pHof the sweet tea where CZH is added is solely contributed by the pHof…

Q: Sodium hypochlorite solution, sold as “chlorine bleach,” ispotentially dangerous because of the…

A: NaClO is a salt of strong base NaOH and weak acid HClOThe anionic part ClO- undergoes anionic salt…

Q: What is the pH of the solution obtained by mixing 35.00 mL of 0.250 M HCl and 35.00 mL of 0.125 M…

A: Given, Volume of HCl = 35.00 ml Volume of NaOH = 35.00 ml Molarity of HCl = 0.250 M Molarity of NaOH…

Q: 7

A: The salt given is NH4C3H5O2.

Q: Calculate the pH of a solution that is 0.125M benzoic acid and 0.200M sodium benzoate, a salt whose…

A: Here, benzoic acid is a weak acid and sodium benzoate is a salt  Benzoate ion is the conjugate base…

Q: Which of the following cannot be used to measure the pH of a solution?

A: a] a . PH meter is used to measure the PH of a solution           where the hydrogen activity (…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.