Is it possible to have a negative number on the pH scale?
Technically it is possible to have a negative pH if you have a concentration of a strong acid higher than 1M (a 1M solution of a strong acid has a pH of 0), but most indicators and meters cannot measure such and acidic solution.
The pH scale does not have an easily defined lowest number. Often, answers of 1 or 0 are given, but not correct. The pH actually goes below zero, so that negative values are possible. In order to measure a pH there must be some water present, so the theoretical lowest pH value would be slightly less than -1.
Well...zero isn't really the lowest number on the pH scale. To simplify things, we teach kids that the scale goes from 0-14, but in reality, a solution can have a negative pH. The pH is the negative log of the hydrogen concentration or -log[H+]. So for -log[H+] to be negative, log[H+] has to be positive; therefore, [H+] would have to be greater than one. A solution that has a negative pH is extremely acidic! For… Read More
The pH scale goes from 0 to 14 where 7 is neutral. 0 is the most acidic possible, and 14 is the most base.
An acid is any substance below 7.0 on the pH scale. The lower the number, the stronger the acid. For instance, hydrochloric acid (HCl) in the stomach is typically at pH 1.0 - 2.5. The scale can range into negative numbers, but most substances are above pH 0.
The highest number on the pH scale is 14. The pH scale goes from 0 to 14.
The number 6 is not a natural number on the pH scale if that is what you mean. In fact the number 7 is a natural and neutral number on the pH scale ( on the pH scale number 7 is a green colour.)
pH is the Negative power of H+ ions so "neutral" is ten to the minus 7th power (or pH=7) so acid is a Lower number and alkaline is a Higher number.
pH is a shortcut way of expressing the negative log of the hydrogen ion concentration. It's scale is widely malunderstood. People will argue til the cows come home that the scale of pH is from 1 to 14. BUT, since it is theoretically possible to have up to 100% H+, the log of100 is 2 inverting the sign to meet the definition shows that a pH of -2 is possible and is the lowest point… Read More
All acidic substances have a pH below seven on the pH scale. So, the answer to this question is no; acidic substances do not have a high number on the pH scale.
7 is neutral on the pH scale.
The pH is a measure of the activity of the ion H+ (the negative logarithm in base 10); the scale is logarithmic.
Yes, 0.1 M HCl has pH value of 1.0, 1.0 M HCl has pH value of 0.0, 10.0 M pH = -1.0 (even negative is possible, but this is about the limit)
ph1 - cheese
The range of the pH scale is 0-14.
Any smelling on the pH scale.
Lemon Juice on the pH scale 2.2
it is neutral. Water is a 7 on the pH scale
In the pH scale of today the highest value is 14.
First, pH stands for the negative logarithm to base 10 of the Hydrogen ion concentration. The pH scale is useful for a number of reasons. It provides us with an understanding of how many hydronium (H3O+) and hydroxide (OH-) ions are in a solution. The more hydronium ions in a solution, the more acidic a solution is and thus the lower the pH. Also the scale is a very convenient 0-14.
The definition of pH is: negative logaritm of the activity of hydrogen ions from a solution. The pH is a measure of acidity and basicity. The conventional pH scale is between 0 and 14. The measuring instrument is called pH-meter.
The pH scale is between 0 and 14 but a pH under 0 is possible for some strong acids.
the pH scale is used to determine the concentration of H+ ions in a substance. the lower the number on the pH scale, the higher the concentration of H+ ions. any number on the scale from 0-6 is an acid. any number from 8-14 is a base. 7 is neutral. pure water has a pH of 7.
On the common pH scale the lower value is near zero.
If it was pure salt, then it would be neutral, a 7 on the pH scale.
No, there are no negative values for pH; the only possible values range from zero to 14.
The pH is over 7.
The pH scale measures how acidic or basic a substance is. The numerical value of this scale is the negative base 10 logarithm of the concentration of hydrogen ions.
A pH is considered on the scale as being neutralized. An example of this number on the scale is pure water.
The pH scale is a scale to express the acidity of aqueous solutions (i.e. anything dissolved in water). The scale is divided in equi-distantial units with decimals, comparable with temperature or pressure scales. Commonly it goes from 0 - 14, with 7 being neutral. pH stands for parts of hydrogen. It is the negative log of the hydrogen ion concentration.
A low number (any number lower than 7) on the pH scale tells us that a solution is acidic.
The neutral value is at pH=7,000.
The neutral pH is 7,00.
This value of pH is 14.
Neutrality is a pH=7,00.
Sodium hydroxide itself does not go on the pH scale, although any aqueous solution of it will have a number on the scale.
A pH over 7 is basic.
A basic solution has a pH over 7.
The pH scale. pH = -log[H+] and the lower the pH, the higher the [H+] and therefore the more acidic a solution. In fact the scale can go to negative numbers for very concentrated acids and above 14 for very concentrated bases.
7 is considered neutral on pH scale. 0......................7..................14 acidic neutral basic
0-7 = Acids on Ph scale. 7-14 = Bases on Ph scale. 7 exactly = neutral if the number is smaller the acid is stronger. if its bigger the base is stronger
The normal range of the pH scale is 0-14, however the scale can actually range from less than -1 to greater than 15.
pH=8 meaning is a slight basic solution.
The pH of Coca-Cola is approx. 3,3.
A pH of 11 is 1000x more alkaline than a pH of 8. The pH scale is a logarithmic scale. This means that in a pH scale, a change of one whole number represents a tenfold change in the pH. So a pH of 8 is 10x more alkaline than a pH of 7.
the strongest acid is number 1 on the pH scale, number 7 is neutral, and number 14 is the strongest alkali/base. hope that helped :) the strong acid is sulfuric acid an easy answer
It's a measurement of how acidic or alkaline something is :) ------------------------------------------------------------------------------------ The pH is defined as the decimal logarithm with changed sign of the ion H+ activity in a solution. Acidity is a pH under 7.0 and basicity is a pH over 7.0. The pH scale is between 0 and 14 but values out of this scale are possible.
Why does the pH scale ordinarily run from 0 to 14 is it possible for the scale to extent beyond 0 and 14if so how?
The pH scale is the negative of the logarithm of the hydrogen ion concentration (molarity) in a solution. Thus at pH 1 there are 1x 10-1 mol/liter of H+ present and at pH 14 there are 1x10-14 mole/liter present (much less) Obviously you could have 1x10-15 mol/liter present for a pH of 15 or even a fraction of of a mole to give a pH of less than 1 (pH 0.698 = 0,2 mole/liter.) At… Read More
Blood lies roughly around 7.35 to 7.45 on the pH scale
The lower a pH number is, the more acidic the solution.
false. a water molecule has one positive charge and two negative charges. but if you are referring to the pH scale, then yes, pure water is a neutral 7 on the pH scale.