# Solving Using PPM (Parts Per Million)

Solution Concentration: Parts Per Million

Tip: This isn't the place to ask a question because the teacher can't reply.

## Key Questions

• PPM stands for parts per million. PPB is a commonly used unit of concentration for very small values.

One part per billion is one part of solute per one billion parts solvent.

PPM is a term used in chemistry to denote a very, very low concentration of a solution. One gram in 1000 ml is 1000 ppm and one thousandth of a gram (0.001g) in 1000 ml is one ppm.

One thousanth of a gram is one milligram and 1000 ml is one liter, so that 1 ppm = 1 mg per liter = mg/Liter.
PPM is derived from the fact that the density of water is taken as 1kg/L = 1,000,000 mg/L, and 1mg/L is 1mg/1,000,000mg or one part in one million.

Ppm (parts per million) to % (parts per hundred)

Example:

1 ppm = 1/1,000,000 = 0.000001 = 0.0001%
10 ppm = 10/1,000,000 = 0.00001 = 0.001%
100 ppm = 100/1,000,000 = 0.0001 = 0.01%
200 ppn = 200/1,000,000 = 0.0002 = 0.02%
5000 ppm = 5000/1,000,000 = 0.005 = 0.5%
10,000 ppm = 10000/1,000,000 = 0.01 = 1.0%
20,000 ppm = 20000/1,000,000 = 0.02 = 2.0%

http://delloyd.50megs.com/ppm.html

• In order to calculate the parts per million you will need to know how many mg of solute is dissolved in 1000g (1L) of water.

$\frac{0.001 g}{1000 g}$ = 0.000001
Multiplying 0.000001 by 1,000,000 gives a result of 1ppm.

Here is a video discussing this type of calculation. In the video, the number of moles of barium present in a 1L sample of water with a barium concentration of 2ppm is calculated.

2 ppm is the maximum allowable level for barium in drinking water in the US as established by the EPA .

video from:Noel Pauller

It's often used to measure contaminants, but there's other applications.

#### Explanation:

When you read about an article about air pollution or water pollution, you'll often see it refer to the concentration of contamination in ppm.

here's a NASA article talking about the concentration of CO2 in the atmosphere reaching 400ppm.

You can also get a water quality tester to see the concentration of foreign particles in the water.

## Questions

• · 5 months ago
• · 5 months ago
• · 5 months ago
• · 5 months ago
• · 6 months ago
• · 6 months ago
• · 6 months ago
• · 8 months ago
• · 8 months ago
• · 8 months ago
• · 9 months ago
• · 9 months ago
• · 9 months ago
• · 10 months ago
• · 1 year ago
• · 1 year ago
• · 1 year ago