The higher the number on the scale, the more basic, or alkaline, the substance is. Substances that are extremely acidic or basic tend to be corrosive, or burn-causing. The scale is logarithmic, meaning that it is based on tens. Thus, a substance with a pH of 4 is 10 times more acidic than a substance with a pH of 5. A log scale makes it easy to compare values that cover a large range, such as in this map A logarithmic scale is a nonlinear scale used for a large range of positive multiples of some quantity. Common uses include earthquake strength, sound loudness, light intensity, and pH of solutions. , pH Scale a scale used to define the levels of hydrogen (H) or hydroxide (OH) ions in a solution. Ranges from 0 (acidic) to 14 (basic/alkaline), with 7 being neutral. , What is the correct approach in calculating the average pH values measured by a combined electrode? Is it a directed ordinary mean or taking the anti-log values at first then getting the average ... Icdar wikiApr 23, 2009 · The pH scale is base-ten logarithmic...meaning that for every 1 point change in pH, the actual concentration changes by a factor of ten. For example, a solution of pH 6 is ten times more acidic than a solution of pH 7. A solution of pH 8 is ten times less acidic than a solution of pH 7. The Decibal scale for sound measurement is an example of a logarithmic scale. The Richter scale, the pH scale, the magnitude scale for stars, the multiplicative scales on a slide rule

# Ph log scale

**The pH scale is theoretically open-ended but most pH values are in the range from 0 to 14. It's a lot easier to use a logarithmic scale instead of always having to write down all those zeros! By the way, notice how one hundred million million is a one with fourteen zeros after it? Feb 13, 2015 · The pH scale is logarithmic, essentially meaning the difference in 1 pH unit is a difference of 10 times! Last week we introduced exactly what we are measuring when we take a pH measurement – hydrogen ion activity . 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. **

The pH scale is a tool chemists have devised to measure how acidic (or alkaline, the opposite of "acidic") a solution is. It is used every day in countless applications, from checking whether the chlorine level in your hot tub is where it should be to allowing biochemists to figure out ideal conditions for reactions affected by acidity to occur. The pH scale is logarithmic. This means that there is a x10 change in acidity or alkalinity for each change of 1 unit in pH. Thus pH5 is 10x more acid than pH6, And pH5 is 100x more acid than pH7.

The Decibal scale for sound measurement is an example of a logarithmic scale. The Richter scale, the pH scale, the magnitude scale for stars, the multiplicative scales on a slide rule A logarithmic scale is a scale used when there is a large range of quantities. Common uses include earthquake strength, sound loudness, light intensity, and pH of solutions. It is based on orders of magnitude, rather than a standard linear scale. The value of each mark on the scale is the value at the previous mark multiplied by a constant. Feb 13, 2015 · The pH scale is logarithmic, essentially meaning the difference in 1 pH unit is a difference of 10 times! Last week we introduced exactly what we are measuring when we take a pH measurement – hydrogen ion activity . As you will see below, your plot of hydrogen concentration versus pH represents a reflection of a base 10 logarithmic function. In this section, we will consider some of the properties of these curves. Graphs of Logarithmic Functions. Logarithmic and exponential functions are inverses of one another. Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.