# What Is The POH If The PH Is 4?

## What is pH and pOH scale?

The pOH scale is similar to the pH scale in that a pOH of 7 is indicative of a neutral solution.

A basic solution has a pOH of less than 7, while an acidic solution has a pOH of greater than 7.

The pOH is convenient to use when finding the hydroxide ion concentration from a solution with a known pH..

## What is the pH of CsOH?

10.88The pH of 7.52×10 −4 M CsOH solution is 10.88 which is basic.

## What is the pH of a base?

The pH scale is often said to range from 0 to 14, and most solutions do fall within this range, although it’s possible to get a pH below 0 or above 14. Anything below 7.0 is acidic, and anything above 7.0 is alkaline, or basic.

## How do you find pOH from pH?

To find the pOH, simply subtract the pH from 14. In order to calculate the pOH, take the negative log of the hydroxide ion concentration.

## What is a pH of 4?

A pH less than 7 is acidic. A pH greater than 7 is basic. The pH scale is logarithmic and as a result, each whole pH value below 7 is ten times more acidic than the next higher value. For example, pH 4 is ten times more acidic than pH 5 and 100 times (10 times 10) more acidic than pH 6.

## What is the value of pH pOH?

At this temperature, then, neutral solutions exhibit pH = pOH = 6.31, acidic solutions exhibit pH less than 6.31 and pOH greater than 6.31, whereas basic solutions exhibit pH greater than 6.31 and pOH less than 6.31.

## What is the equation that relates to pH and pOH?

Use the pH equation pH=−log[H3O+] and pKw equation pKw=pH+pOH=14 . 3. Use the pOH equation pH=−log[OH−] and pKw equation pKw=pH+pOH=14 . 4.

## What is the formula for calculating pH?

To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = – log [H3O+].

## What pH is dangerous?

The danger of more acidic water – when the pH is less than 6.5 – is that it can leach metals from the well and from the pipes that bring you water. These metals include lead, manganese, copper and iron, and they can be toxic in large amounts.

## Is pH above 14 possible?

Mostly – measured pH values will lie in the range 0 to 14, though negative pH values and values above 14 are entirely possible. Since pH is a logarithmic scale, a difference of one pH unit is equivalent to a tenfold difference in hydrogen ion concentration.

## What is the difference of pH and pOH?

pH and pOH denote the negative log of the concentration of hydrogen or hydroxide ions. High pH means that a solution is basic while high pOH means that a solution is acidic.

## What is the pH of a weak base?

The procedure for calculating the pH of a solution of a weak base is similar to that of the weak acid in the sample problem. However, the variable x will represent the concentration of the hydroxide ion. The pH is found by taking the negative logarithm to get the pOH, followed by subtracting from 14 to get the pH.

## What is the highest level of pH?

In Summary: Buffers, pH, Acids, and Bases A solution with a high number of hydrogen ions is acidic and has a low pH value. A solution with a high number of hydroxide ions is basic and has a high pH value. The pH scale ranges from 0 to 14, with a pH of 7 being neutral.

## Does Ka increase with pH?

Whenever you see a “p” in front of a value, like pH, pKa, and pKb, it means you’re dealing with a -log of the value following the “p”. For example, pKa is the -log of Ka. Because of the way the log function works, a smaller pKa means a larger Ka. pH is the -log of hydrogen ion concentration, and so on.

## Is NaOH a weak base?

Is NaOH (Sodium Hydroxide) a Strong Or Weak Base? A strong base is one that completely dissociates (breaks apart) in solution. In the case of NaOH (sodium hydroxide), the compound breaks apart into Na+ and OH- ions completely. This makes NaOH a strong base.

## What are 3 weak bases?

Three common examples of weak bases are listed below.Ammonia.Pyridine.Methylamine.

## Can you have negative pH?

Thus, measured pH values will lie mostly in the range 0 to 14, though negative pH values and values above 14 are entirely possible. Since pH is a logarithmic scale, a difference of one pH unit is equivalent to a tenfold difference in hydrogen ion concentration.

## Why does pH and pOH equal 14?

pH and pOH are the log concentrations of protons and hydroxide ions, respectively. The sum of pH and pOH is always 14. This is because the product of proton concentration and hydroxide concentration must always equal the equilibrium constant for the ionization of water, which is equal to .