0
== ==
== ==
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is a substance that has a pH of more than 7.0.?
an example is baking soda, milk of magnesia, blood.
Do acids have a pH greater than 7?
Acids do not have a pH greater than 7. When the pH is greater than 7, this makes it a base.
What value is used to express the acidity or alkalinity of a system?
Normally term,'PH' of a solution is used determine the strength of an acid which is nothing but the concentration of H+ ion concentration in a solution. ph= -log[H+] concentration.... since its -ve log hence smaller value of PH means it's more strong acid. ph=7 is value of water which is neutral. pH ranging below 7 are acids & above 7 are bases.
What is the pH scale?
The pH scale represents the relative concentration of hydrogen ions in a solution. The concentration of hydrogen ions is commonly expressed in terms of the pH scale. Low pH corresponds to high hydrogen ion concentration and vice versa. A substance that when added to water increases the concentration of hydrogen ions (lowers the pH) is called an acid. A substance that reduces the concentration of hydrogen ions(raises the pH) is called a base. Finally some substances enable solutions to resist pH changes when an acid or base is added. Such substances are called buffers. Buffers are very important in helping organisms maintain a relatively constant pH. The pH scale is a scientific classification of how acidic or basic a substance is. The scale ranges form 0 to 14 -- a pH reading of 7 is neutral in nature , a pH less than 7 is acidic in nature and a pH greater than 7 is basic in nature.
What is the pH scale based on?
pH scale ranges from 0 - 14. It measures the acidity or basicity of a solution. A measurement of 7 is neutral, less than 7 is acidic and a basic is higher than 7. pH is measured based on the concentration of hydroxide and hydrogen (or hydronium) ions in solution. A solution containing hydrogen (H+ ions) or Hydronium ions (H3O - which is made from the reaction of hydrogen ions with water) indicate a pH lower than 7 or an acidic solution. A solution containing hydroxide ions (OH-) creates a basic solution with a pH greater than 7. It is possible to measure a pH that is greater than the bounds of the scale since the calculation for the scale is based on the negative log of the concentration of hydrogen (or hydronium) ions in the solution. pH=-log[H3O] therefore [H3O] = 10^-pH
What is true about bases on the pH scale?
Bases have values higher than 7 Substances with a pH of 7 are neutral Acids have a pH below 7
What is the name given substances whose pH is less than 7?
acidic, alkaline higher than 7
On the pH scale a solution with a pH of 3 is?
A solution with a pH of 3 will be acidic. Substances with pH's below 7 are termed acidic, those with pH's higher than 7 are termed basic or alkaline.
Does higher PH acidity mean it is safer than all of the other lower PH substances?
The closer it is to neutral (7) the safer it is.
What is a substance with a pH of 6?
The pH scale runs from 0 to 14. Pure water has a pH of 7, the half-way point of the pH scale. A pH between 0 and 7 indicates that a solution is acidic, and the lower the pH, the higher the acidity. A pH between 7 and 14 indicates that a substance is alkaline, and the higher the pH, the higher the strength of the alkali.
Is the pH in vinegar higher than 7?
No - vinegar is a (weak) acid, so it's pH is lower than 7. The actual pH of vinegar varies depending on the type and dilusion. Substances with a pH above 7 are "basic." Bleach is a good example.
What Substance that has a pH higher than 7?
If substance has a Ph greater than 7, it is Sodium Bicarbonate and Sodium Hydroxide. Sodium Bicarbonate = 8 Sodium Hydroxide = 14
What pH values are basic?
any greater than 7 the higher it is, the more basic 14 is the more basic it's a logarithmic scale(like the Richter scale for earthquakes)
What is a base solution?
A base solution is one that measures higher than a 7 on the pH scale. These substances are incredibly harmful.
What happens when an alkali pH number is higher than 7?
It is normal for an alkaline solution to have a pH higher than 7.
Difference between acids bases and neutral substances?
Acids - pH less than 7 Base - pH more than 7 Neutral - pH is 7
What is the pH for and acid?
The pH of an acid is higher than 7.
