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In a group 1 analysis, a student adds $\mathrm{HCl}$ acid to the unknown solution to make $\left[\mathrm{Cl}^{-}\right]=0.15 \mathrm{M}$. Some $\mathrm{PbCl}_{2}$ precipitates. Calculate the concentration of $\mathrm{Pb}^{2+}$ remaining in solution.

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$$=0.011 M$$

Chemistry 102

Chapter 16

Acid-Base Equilibria and Solubility Equilibria

Acid-Base Equilibria

Aqueous Equilibria

University of Central Florida

Rice University

Drexel University

Lectures

00:41

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.

24:14

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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in this group. One analysis a student ad that sale as it a non solution to make fear is equal to 0.15 10 and some people to participate. Have we calculate the concentration off T V two positive remaining in resolution. So here the giving is dead solution the given his dad here negatively called tau 0.1 place and and at C l is a strong Is it it completely disassociates here eps hand is a strong Is it it completely? She says those years eso the hair decoration is sad at CNN react with each tool and it gives edge positive c l negative. And here as positive 0.15 a m and for cnegative is also 0.15 a m. Yeah, No yeah. We know the aggression that get SP or BBC two is equal to T V two positive feel negative photo now putting the value in the creation of report the valued at 2.5 into Okay, 2.4 multiplied by 10 to the power minus four is equal toe t V two positive do 2.14 to now. Here we calculate Phoebe we're simplifying this aggression. Find people to positive. Here it will be 2.4 multiplied by 10 to the power minus four, divided by 0.21 plane square. Andi By calculating all the even simplifying these here we get the value. T V two positive is 1.6 multiplied by tend to dip our minus two. Um so this is the compared solution off The answer step by step in detail is go through his hair. I think this is given the serial negative 0.15 them. And we know that there is a strong is it is completely dissociates and has the creation of that sell this one which gives as president c l negative in her 60 point plan one time all and we know the occasional KSB off BBC l two will be equal to people to positive and c l negative Whole square on by putting the values in the equation, have you find the value PB toe positive that is 1.6 multiplied by can depart minus two and

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