The CONCENCENTRATION of a given substance in a chemical soluton is the amount or quantity of that substance present in one litre (1L) or one decimetre cube (1dm³) of the given solution.
The quantity of the substance can be measured in different units, such as:- kilograms (Kg), grams (g), milligrams (mg), microgram (Ug) mole (mol), e.t.c
Since the concentration of a particular substance present in a given solution means the quantity of the substance present in one litre volume of the substance, it simply implies that the unit of measurement of are as follows:-👇
1. Kilogram per litre (Kg/L), 👉. (if the mass quantity is measured in kiligram)
2. grams per litre (g/L), 👉 (if the mass quantity is measured in gram)
3. Miligrams per litre (mg/L), 👉 (if the mass quantity is measured in miligram)
4. moles per litre (mol/L), 👉 (if the mass quantity is measured in moles)
per litre means 👉 in one litre.
The concentration of a substance is said to be expressed in *part per million* when it is expressed in milligrams per litre (mg/L).
So, it simply means that mg/L is the same as ppm
1mg/L = 1ppm
Part Per Million (ppm) is used to express very low concentration
In order to convert a given contraction of a substance given to you from other concentration units to ppm unit, all you need to do is to…👇🏾
👉To convert a given concentration to ppm, all you need to do is to:-
Convert the mass given in the question to milligram (mg) unit
👉🏾 Convert the volume given to you to Litres (L).
*TAKE NOTE OF THE FOLLOWING CONVERSION*
g to mg
To convert from gram to milligram, 👉🏾 *multiply with 1,000*
But from milligram to gram, divide by 1,000.
Kg to mg
To convert from kilogram to milligram, 👉🏾 *multiply with 1,000,000*
But from milligram to kilogram, divide by 1,000,000
Ug to g
To convert mass from microgram unit to gram unit, we divide with one million (10^6) or we multiply with 10^-6.
But to convert from gram (g) to microgram (mg), we multiply with one million (10^6) or we divide with 10^-6.
If you wish to convert from other concentration units to ppm unit, 👇🏾, all you need to do is to:-
*Convert the mass given to you to milligram and convert the volume given to you to Litre*,
Then find out the quantity of the substance that would be contained in 1L of the solution.
*The mass (in miligrams) of a substance contained in 1L of a solution is the ppm of the substance*
For instance, 👇🏾
*If 420mg of a salt is contained in 1L of a solution, then the concentration is said to be 420mg/L, which is the same as 420ppm*
If the solution of a salt contains 1,000mg of the salt in 2L of solution, then the ppm equivalent of this is calculated as follows👇🏾
*Since 2L contains 1,000mg*
*1L will contain x*
x = 1,000/2
x = 500mg
So, in ppm, we have it as *500ppm*
Remember, ppm is the quantity of the substance in milligrams contained in 1L of the solution.
*We can simply use common sence on this as follows;-
Since 2L contains 1,000mg according to the question, therefore, 1L will contain 500mg of the salt*
Answer = 500ppm.
ml to L
*To convert volume, from mililitre (ml) to litre (L), we divide with 1,000*,
But from *litre to millilitre, multiply with 1,000*
m³ to L
To convert volume from metre cube (m³) to litre (L), we multiply with 1,000,
But from litre to metre cube, we divide with 1,000
*FROM THE CATALYST*
Now, solve these 5 questions in the next post and submit your answers into the comment box bellow the the last question.
Do your rough works on a rough paper and pick the correct options and submit into the comment box.
THE CATALYST WISHES YOU THE BEST IN LIFE…08068113736.