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What would be the concentration of a solution made by adding 250 mL of water to 45.0 mL of 4.2 M KOH?
To find the concentration of the final solution, you need to calculate the total moles of KOH before and after dilution. The initial moles of KOH can be found using the initial volume and concentration. Then, calculate the final volume of the solution after dilution and use it to determine the final concentration of KOH.
Which of the following is a weak base NH3 KOH LiOH or NaOH?
Ammonia solution is a weak base.
What is the molarity of a solution when 50.0ml of a 4.00M KOH solution is diluted to 200ml. what is the percent concentration of KOH in this final solution. asume the density of 1.0gmole?
The concentration is 1 mol/L or 5,611 g KOH/100 mL solution.
What is the concentration of an HBr solution if 12.0 mL of the solution is neutralized by 15.0 mL of a 0.25 M KOH solution?
The reaction between HBr and KOH is a 1:1 ratio. This means that the moles of HBr present in the solution will be equal to the moles of KOH used in the neutralization reaction. Using this information and the volume and concentration of KOH used, you can calculate the concentration of the HBr solution.
Can KOH can cause damage to your skin?
If combined with water to a thick slurry (very strong concentration of KOH) yes, it can severely burn skin. But if diluted enough, it passes for soap, and is not harmful if just rinsed off.
What is the pH of a 0.04 M KOH solution?
To determine the pH of a solution of potassium hydroxide (KOH), we need to calculate the concentration of hydroxide ions (OH-) first. Since KOH dissociates completely in water, the concentration of OH- ions will be equal to the concentration of KOH. Therefore, the concentration of OH- ions in a 0.04 M KOH solution is also 0.04 M. To find the pOH, we take the negative logarithm (base 10) of the hydroxide ion concentration: pOH = -log(0.04) ≈ 1.4. Finally, to find the pH, we subtract the pOH from 14 (the sum of pH and pOH in water at 25°C): pH = 14 - 1.4 ≈ 12.6.
Is 0.5N KOH equal to 0.5M KOH?
No, they are not equal. The concentration units are different, where N (normality) represents the concentration of equivalents per liter of solution, while M (molarity) represents the concentration of moles of solute per liter of solution.
A 25 ml sample of 723 m hclo4 is titrated with a 273 m koh solution the h3o concentration after 66.2 ml of koh is?
The balanced chemical equation for the reaction between HClO4 and KOH is HClO4 + KOH → KClO4 + H2O. By using the stoichiometry of the reaction, you can calculate the moles of HClO4 reacted with KOH. Then, use the remaining volume of KOH solution added to calculate the final H3O+ concentration in the solution.
What is the concentration of a HBr if 12.0 mL of the solution is neutralized by 15.0 mL of a 0.25 M KOH solution?
To find the concentration of HBr, you first need to determine the number of moles of KOH that react with the HBr. This can be done using the volume and concentration of KOH solution. Then, using the stoichiometry of the neutralization reaction between HBr and KOH, you can find the number of moles of HBr present in the sample. Finally, divide the moles of HBr by the volume of the sample (12.0 mL) to obtain the concentration of HBr.
A solution with a very high h concentration has a?
Very high pH
Why the specific molar conductivity of 0.01 M KOH is much higher than the specific conducivity of 0.01M KCl?
This is true because KOH has a high concentration of hydrogen ions (H+) and this increases the conductivity of KOH to be significantly higher than that of KCl. KCl has a very highly electronegative ion Cl- Hydrogen bonding occurs at sites of electronegativity which will interfere conductivity at lower concentrations of these Ions
What is the H ion concentration in a 4.8x10-2 M KOH solution?
To find the H ion concentration in a KOH solution, first determine the hydroxide ion (OH-) concentration. Since KOH is a strong base, it fully dissociates in water. Therefore, the OH- concentration is equal to the KOH concentration, which is 4.8x10^-2 M. The H ion concentration can be calculated using the equation Kw = [H+][OH-], where Kw is the ion product of water (1.0x10^-14 at 25°C). From there, you can determine the H ion concentration by dividing Kw by the OH- concentration.
