A solution of potassium hydroxide (KOH, 56.11 g/mol) is 38% by mass with a density of...

Question

Question

A solution of potassium hydroxide (KOH, 56.11 g/mol) is 38% by mass with a density of 1.344 g/mol. WHat is the molality of the KOH?

science chemistry

Answer 1

Similar Homework Help Questions

Potassium hydroxide is very soluble in water, resulting in extremely basic solutions. A 121 g sample...

Potassium hydroxide is very soluble in water, resulting in extremely basic solutions. A 121 g sample KOH is dissolved in water at 25 °C to make up 100.0 mL of solution. The molar mass of KOH is 56.11 3. What is the pH of the solution at 25.0°C? • Round the answer to two decimal places.
Question Potassium hydroxide is very soluble in water, resulting in extremely basic solutions. A 121 g...

Question Potassium hydroxide is very soluble in water, resulting in extremely basic solutions. A 121 g sample KOH is dissolved in water at 25 °C to make up 100.0 mL of solution. The molar mass of KOH is 56.11 3. What is the pH of the solution at 25.0°C? • Round the answer to two decimal places. Provide your answer below: pH =
An 11.0% (by mass) solution of potassium carbonate (molar mass 138.2 g/mol) has a density of...

An 11.0% (by mass) solution of potassium carbonate (molar mass 138.2 g/mol) has a density of 1.13 g/cm3. Calculate the molarity ofpotassium ions (atomic mass 39.10 g/mol) in the solution.

6.4 g of potassium hydroxide (56.1 g/mol) dissolves in 105 g of water. The temperature of...

6.4 g of potassium hydroxide (56.1 g/mol) dissolves in 105 g of water. The temperature of the solution increases by 13.97 oC. Calculate the ΔHsoln in kJ/mol for potassium hydroxide (the specific heat capacity of the solution is 4.2 J g-1oC-1). KOH(s) K+(aq) + OH-(aq)
Could someone answer the following questions? 1) 11.2 g of potassium hydroxide (KOH) is dissolved in...

Could someone answer the following questions? 1) 11.2 g of potassium hydroxide (KOH) is dissolved in sufficient water to make 1 L of solution. What is the concentration of KOH in the solution? a. 0.02 mol/L b. 0.1 mol/L c. 0.2 mol/L d. 0.01 mol/L 2) If the solution is neutral, which of the following must be true? a. [OH-] = [H2O] b. [H+] > [OH-] c. [H+] < [OH-] d. [H+] = [OH-] 3)A student titrates 0.5222 grams of...
1.) What is the molarity of a potassium hydroxide solution prepared by dissolving 2.74 g KOH...

1.) What is the molarity of a potassium hydroxide solution prepared by dissolving 2.74 g KOH in 4.2 mL of water? 2.) How many grams of sodium hydroxide are delivered by 6.8 mL of a 10 % solution in water? 3.) Hydrogen chloride (a gas) is dissolved into water to create hydrochloric acid, and therefore is a solution. Commercially available concentrated hydrochloric acid is sold as a 35 - 37 % solution. What molarity does this equate to? 4.) How...

A chemist would like to 800.0 mL of a 5.00 M solution of potassium hydroxide. What...

A chemist would like to 800.0 mL of a 5.00 M solution of potassium hydroxide. What mass of KOH is needed to make this solution? (Molar mass of KOH = 56.10 g/mol)
A 2.78 L aqueous solution of KOH contains 183 g of KOH. The solution has a...

A 2.78 L aqueous solution of KOH contains 183 g of KOH. The solution has a density of 1.29 g/mL. Calculate the molarity (M), molality (m), and mass percent concentration of the solution. molarity: 1.175 M molality: m mass percent:
a solution was prepared by dissolving 27.0 g KOH in 100 g water. A) what is...

a solution was prepared by dissolving 27.0 g KOH in 100 g water. A) what is mole fraction of KOH in solution? B) what is mass percent?C) what is the molality? 2. A solution was prepared by dissolving 27.0 g KOH(s)in 100.0 g water. You may use the chart below if you find usefiul to answer questions a) -e) MW (g/mol Mass ()moles 56.1 H20 18.0 Solution (a) What is the mole fraction of KOH in the solution? (5 pts...

What is the pH of this solution prepared by dissolving 0.28 grams of KOH in 250...

What is the pH of this solution prepared by dissolving 0.28 grams of KOH in 250 mL of solution? (molar mass KOH = 56.11 g/mol)