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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.
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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 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.
What is the difference between the pH and pI values of a substance and how do they affect its properties?
The pH value of a substance indicates its acidity or basicity, while the pI value is the pH at which a molecule carries no net charge. The pH affects the solubility and reactivity of a substance, while the pI influences its stability and interactions with other molecules.
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 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?
an acid. one example of a pH 6 substance is urine.
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?
- log(1.0 X 10 -8 M)= 8 pH------------ log(1.0 X 10 -6 M)= 6 pH---------The pH lowered in solution 100 times in concentration of H +. From basic, 8 pH, to acidic, 6 pH.
When measured on the pH scale acid is?
The pH scale ranges from 0-14. From 0-6, the substance is acidic. A value of 7 means the substance is neutral. From 8-14, the substance is basic.
What substance has the highest ph?
The substance with the highest pH is liquid ammonia, which has a pH of about 11.6.
