Part 1 Calculate the pH of a solution in which (HO)- 4.26x10 M. Give your answer to two places after the decimal. Part 2 Calculate the pOH of the solution in which (HO')-4.26x10 M. Give your answer to two places after the decimal. Part 3 If 100. ml. of the solution in part 1 is concentrated by evaporation to give a final volume of 1.00 ml, what is the change in pH? Choose one: O pH decreases by 2. O pHincreases by 2. pH decreases by 10. O pH increases by 10.

Q: A 0.0015 M solution of a weak base has a pH of 9.84. Calculate Kb

A: We have given that pH of Weak base = 9.84 Concentration of Weak base = 0.0015M pH + pOH = 14 pOH =…

Q: A chemist dissolves 831. mg of pure hydrochloric acid in enough water to make up 170. mL of…

A: Given data: Mass of pure hydrochloric acid HCl = 831 mg = 0.831 g Volume of solution = 170. mL =…

Q: A chemist dissolves 631. mg of pure hydrochloric acid in enough water to make up 240. mL of…

A: Given as Mass of HCl=631 mg Volume of solution= 240 mL The pH of the solution has to be calculated.

Q: If you know the [OH], how can you determine the pH of a solution? Match the words in the left column…

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Q: A chemist dissolves 715. mg of pure potassium hydroxide in enough water to make up 80. mL of…

A:

Q: A chemist dissolves 843. mg of pure potassium hydroxide in enough water to make up 80. mL of…

A: Mass of KOH = 843 mg1mg = 10-3 gMass of KOH = m = 0.843 gMolar mass of KOH = 56.1 g/mol = MMoles of…

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

A: When a solution is diluted by adding water, concentration changes.

Q: A chemist dissolves 858. mg of pure sodium hydroxide in enough water to make up 170. mL of solution.…

A: The pH of any solution is defined as the negative logarithm of the H+ ion cocentration of the…

Q: which assumption can't be applied in the calculation of the pH of this solution? (a) that the…

A: pH is the measure of the concentration of the H+ ions in the solution. It can be acidic, basic, and…

Q: pls answer the 3 questions since choices are provided. skip if not willing. will upvote thank you!…

A: Hii there, As there are multiple question posted. we are answering first question as per our…

Q: The pH of an aqueous solution at 25°C was found to be 9.80. The pOH of this solution is The…

A: 1) Given that : pH of the solution = 9.80 pOH of the solution is, pH + pOH = 14 pOH = 14 - pH = 14 -…

Q: A solution is prepared by adding 49.7 mL concentrated hydrochloric acid and 19.1 mL concentrated…

A: Given: The volume of concentrated hydrochloric acid (HCl) is 49.7 mL The volume of concentrated…

Q: A solution is made by dissolving 36.7 g of HCl in 885 mL of water. Calculate the pH of the solution.

A: Given data of the following, mass of HCl = 36.7 g molar mass of HCl =36.458 g mol-1 Volume=885 ml =…

Q: A chemist dissolves 846. mg of pure hydrochloric acid in enough water to make up 120. mL of…

A:

Q: When you measured the pH of the 0.1M HCl solution, you placed 25mL of the solution in a 50mL beaker.…

A: The concentration of any chemical species, which is denoted by the square brackets, is given by the…

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

A:

Q: A chemist dissolves 449. mg of pure potassium hydroxide in enough water to make up 170. mL of…

A: The number of moles of a substance is determined as the mas of that substance upon its molar mass.…

Q: Calculate the pH of a solution that is 0.32 M HNO3 and 0.50 M HOCN. Ka(HOCN) = 3.5 × 10‒4. pH =…

A:

Q: Type your answers in all of the blanks and submit Answer the following questions to review the…

A: In a neutral water the concentration of hydrogen ion and hydroxide ion are equal and the…

Q: Calculate the pH of a formic acid solution that contains 1.42% formic acid by mass. (Assume a…

A: Molarity of formic acid, C = moles of solutevolume of solution = 1.42 x 1.01 x 100046 x 100 = 0.312…

Q: A chemist dissolves 465. mg of pure potassium hydroxide in enough water to make up 90. mL of…

A: Mass of KOH in g = 465 / 1000 = 0.465 g Volume of solution in L = 90/1000 = 0.090 L Moles of KOH =…

Q: A chemist dissolves 491. mg of pure sodium hydroxide in enough water to make up 60. mL of solution.…

A: The given data is as follows:       The mass of sodium hydroxide = 491 mg = 0.491 g The volume of…

Q: A chemist dissolves 203. mg of pure barium hydroxide in enough water to make up 60. mL of solution.…

A: We have to predict the pH of the solution.

Q: Two drops (0.1 mL) of 7.0 M HCl are added to water to make 1.0 L of solution. What is the pH of this…

A: Given: Concentration of HCl initially = 7.0 M Volume of initial HCl taken = 0.1 mL = 0.0001 L…

Q: A chemist dissolves 423. mg of pure potassium hydroxide in enough water to make up 130. mL of…

A: Given data,  Mass of pure potassium hydroxide (KOH) = 423 mg  Volume of solution = 130 mL…

Q: Part A    If the pH of Solution 1 is 11.90, what is [H3O+]? Express your answer to two significant…

A:

Q: A chemist dissolves 717. mg of pure potassium hydroxide in enough water to make up 80. mL of…

A:

Q: A solution containing 2.60 x 103 moles of HCl and 3.32 x 10~³ moles of NaOH into a container and…

A:

Q: Q1-SOLVE mathematically, then choose the correct answers: 1- Calculate the pH of solution made by…

A: Answer - The correct option is (a)  = 3 According to the question - Given values - Ka = 1.8 x 10^-5…

Q: A chemist dissolves 883. mg of pure sodium hydroxide in enough water to make up 60. mL of solution.…

A:

Q: Calculate the pH of 0.71 M Ca(OH)2 solution. Provide your answer to two places after the decimal and…

A: Given :- molar concentration of Ca(OH)2 solution = 0.71 M  To calculate :- pH of solution

Q: Solution pH [H3O'] Solution [H30*] calculated pH calculated Boiled (but cooled) Boiled (but cooled)…

A: PH = -log [H3O+] Where [H3O+] = concentration of H3O+ Then  [H3O+] = 10-PH

Q: The pH of a solution of HCl in water is found to be 1.20. What volume of water would you add to 1.00…

A: When an acid is diluted from an initial volume V1 to final volume V2 by adding water  then its pH…

Q: Rank the following solutions in the order of their increasing pH values, ie., from the lowest to the…

A: The acid is the substance having a tendency to give hydronium ions in the solution while the base…

Q: A chemist dissolves 715.mg of pure sodium hydroxide in enough water to make up 60.mL of solution.…

A: Given,

Q: 4(qee) at antun metx 3 ent to taen Gea Lemon Juice ai oloriq Increasingly acidic 27. According to…

A:

Q: Human blood is slightly basic.  Calculate the hydroxide ion concentration in a sample of blood with…

A: Given,  (a). pOH = 6.49, then find  hydroxide ion concentration that is [OH-] = ?  (b). pH value of…

Q: A chemist dissolves 237. mg of pure perchloric acid in enough water to make up 240. mL of solution.…

A:

Q: A chemist dissolves 635. mg of pure potassium hydroxide in enough water to make up 80. mL of…

A:

Q: A chemist dissolves 505. mg of pure barium hydroxide in enough water to make up 180. mL of solution.…

A:

Q: A chemist dissolves 523.mg of pure sodium hydroxide in enough water to make up 140.mL of solution.…

A: Mass of NaOH = 523. mg = 539×10-3 g  [ 1 mg = 10-3 g ] Molar mass of NaOH = 40.0 g/mol Moles of NaOH…

Q: Calculate the pH of a solution in which (HO) = 4.26×10 M. Give your answer to two places after the…

A: We know that, pH is the negative logarithm of hydronium ion concentration. i.e.,…

Q: Calculate the pH of a solution that is 0.255M benzoic acid and 0.150M sodium benzoate, a salt whose…

A: Ka of benzoic acid = 6.3 x 10-5 pKa = - log(6.3 x 10-5) = 4.20 Since solution contains benzoic acid…

Q: Calculate the pH of a solution in which [H3O*] = 4.79×10 3 M. Give your answer to two places after…

A: The answers to the following questions can be given as:

Q: A chemist dissolves 382. mg of pure sodium hydroxide in enough water to make up 70. mL of solution.…

A: Solution : We need to calculate the molarity of the solution first 1M NaOH=40g of NaOH in 1 L of…

Q: Complete the data sheet below. DETERMINATION OF pH OF DIFFERENT SOLUTIONS For those who will be…

A:

Q: A chemist dissolves 326. mg of pure potassium hydroxide in enough water to make up 130. mlL of…

A: Given: Mass of KOH = 326 mg = 0.326 g                                     (since 1 g = 1000 mg) And…

Q: Answer the following questions to review the relationship between [Ht]and OH J. A solution with pH…

A: The above question relates between the PH  and POH of solution . We know the relation between PH…

Q: Hydroiodic acid often is used to disinfect and sanitize medical tools and products. In an…

A: To predict pH without calculation we will observe the concentration of the HI acid before and after…

Q: A solution is prepared by adding 51.0 mL concentrated hydrochloric acid and 19.9 mL concentrated…

A: Given, Solution is prepared by adding: 51mL of 38% by Mass HCl solution 19.9 mL of 70% by mass HNO3…

Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.