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A 0.2688 -g sample of a monoprotic acid neutralizes $16.4 \mathrm{mL}$ of $0.08133 \mathrm{M}$ KOH solution. Calculate the molar mass of the acid.

$$=202 g / \mathrm{mol}$$

Chemistry 102

Chapter 16

Acid-Base Equilibria and Solubility Equilibria

Acid-Base Equilibria

Aqueous Equilibria

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In chemistry, an ion is an atom or molecule that has a non-zero net electric charge. The name was coined by John Dalton for ions in 1808, and later expanded to include molecules in 1834.

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In chemistry, a buffer is a solution that resists changes in pH. Buffers are used to maintain a stable pH in a solution. Buffers are solutions of a weak acid and its conjugate base or a weak base and its conjugate acid, usually in the form of a salt of the conjugate base or acid. Buffers have the property that a small change in the amount of strong acid or strong base added to them results in a much larger change in pH. The resistance of a buffer solution to pH change is due to the fact that the process of adding acid or base to the solution is slow compared to the rate at which the pH changes. In addition to this buffering action, the inclusion of the conjugate base or acid also slows the process of pH change by the mechanism of the Henderson–Hasselbalch equation. Buffers are most commonly found in aqueous solutions.

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let's start this problem by setting up in equation. We have ah mahn approach aghast in which means that it has one proton. That's the best way to understand this. We have this reacting with our base, which is potassium hydroxide, and this is going into a full neutralization. So we form some product with potassium and we form water. This is a balanced reaction, so we're good to go with that. Now let's look at our givens were given that for concentration of base. Zero point is your 8133 Moeller were given that reaction with 0.2688 grams of our acid and our ski initial solution was 16 point formal leaders. So using this, we can solve for R. Moeller Mass. First, let's start with our polarity base our best. But here, Mr Convertibles, we know that polarity is most for Leader were given that this is a solution with 16.4 no leaders, we need to convert this into leaders so that we can cancel out our units. So we get 1000 leaders, one leader and as you can see, that will cancel and we'll get our rules which is 0.133 moles. Now we can use Starkey on a tree to convert from most of potassium hydroxide. Two moles of armada, protic acid. So we have 0.133 walls of our potassium hydroxide. It's a wonder one ratio. So for everyone will of K O H. We have one mole of acid. This will give us 0.133 moles of our acid. Now we confined our Mueller mess. Ruler Mass is grams per mole. We're giving our grams. So is there a 0.2688 grams of acid over our Mel's, which is 0.133 moles and we get 202 grams per mole before us?

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