Chemistry, 18.07.2019 07:00 nekobaby75

The poh of a solution is 10.75. what is the concentration of ions in the solution? use mc013-1.jpg. 3.162 mc013-2.jpg m 1.778 mc013-3.jpg m 1.075 mc013-4.jpg 102 m 5.623 mc013-5.jpg 1010 m

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Answer from: Idontknow708

$[OH^-] =10^{-10.75}=1.778\times 10^{-11}M$

Explanation: pOH is defined as negative logarithm of hydroxide ions. More is the number of [OH^-] ions , lesser is the pOH and vice versa.

pH + pOH = 14

$pOH=-log[OH^{-}$

10.75=-log[OH^-]

$[OH^-] =10^{(-10.75)}=1.778\times 10^{-11}M$

Answer from: alize123213

Answer : The concentration of the OH is, $1.778\times 10^{-11}M$

Solution : Given,

pOH=10.75

pH : It is defined as the negative logarithm of the hydronium ion concentration.

$pH=-\log [H^+]$ .........(1)

pOH : It is defined as the negative logarithm of the hydroxide ion concentration.

$pOH=-\log [OH^-]$ ........(2)

Now put the value of pOH in expression (2), we get the concentration of OH ion.

$10.75=-\log [OH^-]$

$[OH^-]=10^{-10.75}$

$[OH^-]=1.778\times 10^{-11}M$

Therefore, the concentration of the OH is, $1.778\times 10^{-11}M$

Answer from: Quest

level 4 to level 2 : ))

Answer from: Quest

The answer to your question really depends on three things: how much water you have, how cold it is to start out, and how cold the things around it are. water actually freezes when it gets to 32 degrees fahrenheit (0 degrees celsius), but the time it takes to get there may be different. let's start with the first. if you take two glasses, and fill one with a tiny bit of water, and the other about halfway, then put them both in the freezer, the one with less water will freeze first (you can try this at home, but i recommend using plastic cups and not glass ones). now let's move on to the second part. let's say you have two glasses, and you fill one with really cold water that has been in the refrigerator, and the other with really hot water from the sink. if you put both of them in the freezer, the one that started out colder will freeze first. for the third part, let's imagine that you have two glasses with the same amount of water in them, and the water is at the same temperature. imagine putting one outside on a really really cold day in georgia, and having a friend in alaska put one outside on the same day. since it would be so much colder in alaska, the glass of water there would freeze before yours. so, if you took a tiny bit of really cold water in a glass, and put it outside on a cold day in alaska, it would freeze a lot faster than a big glass of hot water outside on a cold day in georgia.

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