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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.
A substance with a pH of 6 is slightly acidic. It falls on the pH scale between neutral (pH 7) and acidic (pH less than 7). Some examples of substances with a pH of 6 include milk and eggs.
Acid substances have a pH in the range of 0 to 6.99, neutral substances have a pH of 7, and bases have a pH in the range 7.01 to 14 (almost all pH are from 0 to 14).
A base is defined as any chemical with a pH greater than 7. Acids have a pH less than 7. And pure water has a pH of exactly 7.
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Which has the greater concentration of hydrogen ions a substance with a pH of 5 or a substance with a pH of 4?
A substance with a pH of 4 has a greater concentration of hydrogen ions compared to a substance with a pH of 5. The pH scale is logarithmic, so each decrease in pH by 1 represents a tenfold increase in hydrogen ion concentration.
A substance with a pH of 11 is what times more what than a substance with a pH of 8?
A substance with a pH of 11 is 1000 times more basic than a substance with a pH of 8. This is because the pH scale is logarithmic, with each unit representing a tenfold difference in hydrogen ion concentration.
What is an acid and base?
An acid base indicator is a substance that changes colour due the PH of the medium in which it is dissolved.
Why are acidic substances lower in pH value than basic substances?
Acidic substances have higher concentrations of hydrogen ions (H+) which results in a lower pH value compared to basic (alkaline) substances. A lower pH value indicates a higher concentration of H+ ions, while a higher pH value indicates a higher concentration of hydroxide ions (OH-) found in basic substances.
What pH level does catechol oxidase work best a?
Catechol oxidase works best at a pH range of 5.0 to 7.0. Outside this range, its enzymatic activity may decrease.
What is a substance which is pH 6?
Natural rainwater (pH 5 - 6) Milk (pH 6 - 6.6)
What common substance have a pH of 6?
me
What has a pH of 6?
A substance with a pH of 6 is considered slightly acidic. Some examples of substances with a pH of 6 include urine and some fruit juices.
A substance with a pH of 6 is called what?
A substance with a pH of 6 is considered slightly acidic. Water has a neutral pH of 7, so a pH of 6 indicates a higher concentration of hydrogen ions than hydroxide ions in the solution.
A substance with pH of 6 is called what?
Anything with a pH less than 7 is an acid. Anything with a pH greater than 7 is a base. pH = 7 is neutral
If a substance tested 2 on the pH scale how many times more acidic than a substance that scored 6 on the pH scale?
A substance with a pH of 2 is 1000 times more acidic than a substance with a pH of 6. This is because each unit change on the pH scale represents a 10-fold change in acidity. So, the difference in pH of 4 units means a 10^4 or 10000-fold difference in acidity.
What type of substance have a pH between 1 and 6?
Acids.
Is a substance with a pH of 6 an acid base or neutral?
a weak acid
What substance has a pH of 1-6?
Substances with a pH of 1-6 are acidic in nature. Examples include lemon juice, vinegar, and stomach acid.
What will happen to the pH fo a substance if the concentration of hydrogen ions increases from 1.0x10-8 to 1.0x106-6?
If the concentration of hydrogen ions increases from 1.0x10^-8 to 1.0x10^-6, the pH of the substance will decrease. This is because pH is the negative logarithm of hydrogen ion concentration, so an increase in hydrogen ion concentration leads to a decrease in pH.
When measured on the pH scale acid is?
When measured on the pH scale, acids have a pH below 7. They release hydrogen ions in water and have a sour taste.
If a substance has a pH of 6 is it a strong or werak acid?
Strong acids have pH values below 3 , so it is a weak acid.
