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Which gas is given out when sodium hydroxide reacts with a metal?
Hydrogen gas is given off when sodium hydroxide reacts with a metal. This is due to the displacement reaction that occurs where the more reactive metal displaces hydrogen from water molecules in the sodium hydroxide solution.
Which gas is always given off when an acid solution is electrolysed?
Hydrogen gas is always given off when an acid solution is electrolyzed.
What information is necessary to determine the pH of a solution when you given hydroxide ion concentration?
To determine the pH of a solution from the hydroxide ion concentration, you also need the concentration of the hydrogen ion. Once you have that information, you can use the equation pH = 14 - pOH, where pOH is calculated as -log[OH-] and [OH-] is the hydroxide ion concentration.
What is the pH of a solution which has a hydroxide ion OH- concentration of 1.25 x 10-5?
The pH of a solution can be calculated using the formula pH = -log([H+]), where [H+] is the concentration of hydrogen ions in the solution. Given that the solution has a hydroxide ion concentration of 1.25 x 10^-5, we can use the fact that [H+][OH-] = 1.0 x 10^-14 for water to find the concentration of hydrogen ions. Plugging this into the pH formula will give the pH of the solution.
What is the reaction between calcium and water?
Calcium reacts with water to form calcium hydroxide and hydrogen gas. Calcium is oxidised and hydrogen is reduced, so it is a redox reaction. It is also a displacement reaction as hydrogen in water is displaced by calcium.
Which gas is given out when sodium hydroxide reacts with a metal?
Hydrogen gas is given off when sodium hydroxide reacts with a metal. This is due to the displacement reaction that occurs where the more reactive metal displaces hydrogen from water molecules in the sodium hydroxide solution.
Which gas is always given off when an acid solution is electrolysed?
Hydrogen gas is always given off when an acid solution is electrolyzed.
What information is necessary to determine the pH of a solution when you given hydroxide ion concentration?
To determine the pH of a solution from the hydroxide ion concentration, you also need the concentration of the hydrogen ion. Once you have that information, you can use the equation pH = 14 - pOH, where pOH is calculated as -log[OH-] and [OH-] is the hydroxide ion concentration.
What is the pH of a solution which has a hydroxide ion OH- concentration of 1.25 x 10-5?
The pH of a solution can be calculated using the formula pH = -log([H+]), where [H+] is the concentration of hydrogen ions in the solution. Given that the solution has a hydroxide ion concentration of 1.25 x 10^-5, we can use the fact that [H+][OH-] = 1.0 x 10^-14 for water to find the concentration of hydrogen ions. Plugging this into the pH formula will give the pH of the solution.
How many atoms are there in lime water?
Lime water is a saturated solution of calcium hydroxide (Ca(OH)₂) in water. Each formula unit of calcium hydroxide contains one calcium atom, two oxygen atoms, and two hydrogen atoms, totaling five atoms. In a given volume of lime water, the number of atoms will depend on the concentration of the solution and the amount of water present.
How do you make a 10 percent aqueous solution of potassium hydroxide?
To make a 10 percent aqueous solution of potassium hydroxide, you would dissolve 10 grams of potassium hydroxide in enough water to make a total solution volume of 100 mL. This solution would be considered a 10 percent concentration by weight. Be cautious when handling potassium hydroxide as it is a caustic substance.
What is the reaction between calcium and water?
Calcium reacts with water to form calcium hydroxide and hydrogen gas. Calcium is oxidised and hydrogen is reduced, so it is a redox reaction. It is also a displacement reaction as hydrogen in water is displaced by calcium.
What name is given to substance the decrease the concentartion of hydrogen ions in solution?
A substance that decreases the concentration of hydrogen ions in a solution is called a base or alkaline substance. It helps increase the pH of the solution, making it less acidic.
A science teacher added the reactive metal potassium to water. The metal formed a ball shapeon the surface of the water and the gas given off burned with a pop. Name the gas given off.?
The gas given off is hydrogen gas. When potassium reacts with water, it forms potassium hydroxide and hydrogen gas. The pop sound is due to the ignition of the hydrogen gas.
What would be the pH of a solution with a hydrogen ion concentration of 0.00001m?
The pH of a solution can be calculated using the formula pH = -log[H+]. Given a hydrogen ion concentration of 0.00001 M, the pH would be 5.
What is the concentration of the hydroxide ions of a solution whose pH is 4.0?
The concentration of hydroxide ions (OH-) in a solution with a pH of 4.0 is 1 x 10^-10 mol/L. This value can be calculated using the relationship between pH and pOH (pOH = 14 - pH), and then using the formula for the concentration of hydroxide ions in water at a given pOH.
What name is Given to a substance that when it is placed in water will dissolve to yield hydroxide ion?
A substance that dissolves in water to yield hydroxide ions is called a base. Bases can accept protons or donate electron pairs in reactions and are characterized by their ability to increase the concentration of hydroxide ions (OH⁻) in solution. Common examples include sodium hydroxide (NaOH) and potassium hydroxide (KOH).
