A solution consisting of acid HA and salt KA If the pH value before adding salt is 3 and after adding salt 5 Calculate the concentration of the added acid

Md Ariful Islam

0 like 0 dislike
1 views
Share with your friends

1 Answers

Md Ariful Islam

Call

Your question is not clear and detailed. Well, I presume you meant a substance (salt) was added to an acid with the PH of 3. After adding it the PH of the solution is 5

Change in PH = 5-3

PH of added substance is 2

-log(H+)=2

H+ = 10-2 = 0.01

When next you would send a question, please endeavor to make it clear and detailed. Thank you

0 like 0 dislike
1 views
Talk Doctor Online in Bissoy App
Can salt be lost during evaporation because after evaporating H20 from NaCl i was left with 0.1g of salt but using the equation m=n×M there should of been 0.1255g of salt. How was the salt lost?

Sodium chloride is not decomposed when heated in water and you could not lose it that way. It is lost due to experimental error (maybe spillage of the solution)

1 Answers 1 views
Calculate the concentration of OH- ions when reacting with 100 cm3 of KOH solution, concentration 0.09 mol / dm3 with 120 cm3 of H2SO4 solution with concentration 0.1 mol / dm3!

The reaction given:2KOH + H2SO4 = K2SO4 + 2H2OAs 1 L = 1dm3 and 1 ml = 1 cm3, the number of moles of the reactants equals:n(KOH) = M × V = 0.09...

1 Answers 1 views
A solution of salt solution is made by mixing 6.75 g of NaCl(s) in enough water to make exactly 750 mL of solution. What is the W/V percentage concentration of the solution?

Weight/Volume Percentage Concentration is a measurement of the concentration of a solution. Solubilities are sometimes given in units of grams of solute per 100 mL of water, that is, as...

1 Answers 1 views
What will be the mass concentration of the HCl solution if 400 cm3 of water is added to 100 cm3 of a solution with a mass concentration of 10 g / dm3?

(100 cm3) × (1dm3 / 1000 cm3) = 0.1 dm3Solution:(0.1 dm3 HCl) × (10 g HCl / 1 dm3 HCl) = 1 g HClMass of solute = 1 g HClVolume...

1 Answers 1 views
What is the concentration (in mol / dm3) of KCl in the solution formed by mixing 25 mL of KCl solution, 0.100 M concentration with 50 mL of KCl solution, 0.100 M concentration?

The concentration of both solutions is equal. Therefore, we will get 75 ml of 0.100 M KCl solution.0.100 M = 0.100 mol/dm3.

1 Answers 1 views
A solution of hydrochloric acid has a concentration of 4.50g L-1 . (i) Calculate the hydronium ion concentration in mol L-1 . (ii) Calculate the pH of the solution.

Solution:hydrochloric acid = HClhydronium ion = H3O+The molar mass of HCl is 36.458 g/molHence,(4.50 g HCl L-1) × (1 mol HCl / 36.458 g HCl) = 0.123 mol L-1C(HCl) =...

1 Answers 1 views
How much 2.0 % salt solution can be made to fill the bags of a hospital if 16.7 of salt are available ? A. 835 solution B. 334 solution C. 0.334 solution D. 835000 g solution

16.7 g of salt are available16.7 * 100 / 2 = 835 g - solution massAnswer A

1 Answers 1 views
34.62 mL of a 0.3 M Mg(OH)2 solution are needed to neutralize a 15-mL solution of HCl on unknown concentration. Calculate the concentration of HCl solution.

Mg(OH)2+2HCl=MgCl2+2H2O1.Trace by finding the amount of Mg(OH)2. To do this, we multiply the molarity by the volume (liters): 0.03462litres *0.3 mol/litres= 0.010386 mol Mg(OH)22.based on the reaction we find the amount...

1 Answers 1 views
What gas is produced when acid is added to zinc metal? Why is the 6 HCI added ( once the solution is colorless) after the zinc metal was added?

Hydrogen gasMetals react with acids to produce metal salt and hydrogen gas. In this reaction, addition of HCl to metal was bring the reaction with zinc metal to initiate the...

1 Answers 1 views
What are value added, non value added but essential, non value added(waste) activities of an university?

Value added activities are: payments for education, publications of books, articles, magazines, new patents, new developments, technologies, methods of production.. Non value added but essential are: all steps of educating...

1 Answers 1 views
X