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What is the pH of a buffer made by dissolving 2.5g ammonium chloride in 125cm3 of 0.24 mol per dm3 ammonia?
Wiki User
∙ 16y ago
See the Web Links and Related Questions for more information. This is a common buffer. The pH would be 9.25 as long as both ingredients were present AT THE SAME CONCENTRATION in the solution.To check that, you need to convert 2.5 g NH4Cl to moles, and find the concentration by dividing by the volume (0.125 liters).
Then see if this is equal to 2.4 moles per liter, which is the concentration of ammonia.
Awfully concentrated ammonia solution if you ask me...
Wiki User
∙ 16y ago
Wiki User
∙ 14y agoEvery NH3 molecule can accept one electron, so 0.25 moldm-3 NH3 behaves like 0.25 moldm-3 OH- ( Every mole of OH- can accept one mole of electrons).
pH + pOH = 14
pOH = - log (OH-)
= -log (0.25)
= 0.60
Therefore pH = 13.4
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What is the density of a 30g cube with length of 5cm?
Density = Mass/Volume Volume of cube=5cmx5cmx5cm=125cm3 So 30g/125cm3=0.24g/cm3
What is the volume of a cube if it is 5cm in length?
The volume is 125cm3
The mass of a 125cm3 piece of material is 83.75g determine the density of this material?
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What is the volume of a cube with the edges measuring 5 cm?
125cm3 I believe :P
What is the volume of a cube that measures 5cm along each edge?
53 = 125cm3 and that is your volume
What is the density of a cube of wood with sides 5 cm and a mass of 100g?
All of the sides equal to 5cm Mass = 100g To find volume you do 5 X 5 X 5 = 125cm3 (Its cm3 because you X 5 by itself 3 times) Therefore 100g/ 125cm3 (You divide 100g (MASS) by 125cm3 (VOLUME)) Answer = 4/5 which in a whole number is 0.8g per cm3
What is the density of a wood block with a volume of 125 cm3 and a mass of 57 g?
57g/125cm3 = .456g/cm3.
What is 5cm to the third power?
5cm to the 3rd power = 5cm x 5cm x 5cm = 125cm3 (or 125 cubic centimeters)
What is the edge length of volume 124 cubic cm?
1241/3 = 4.98663 cm. if the cube's volume was 125cm3 it would be 5cm
What is the area of a face of a cube that has a volume of 125cm3?
Cube root of 125 cm3 = 5 cm Therefore each side = 5 cm So each face is 5 cm x 5 cm = 25 cm2
What is formula to find the volume of cube?
That is S (length of the side) to the third power. So if S=1, V=1; if S=2, V=8; if S=3, V=27.
If two similar prisms have volumes of 125 cm3 and 9 cm3 what is the side ratio of the two prisms?
If the sides of two shapes are in the ratio of A : B, then their volumes are in the ratio A3 : B3, thus: ratio of volumes = 125 : 9 ratio of sides = 3√125 : 3√9 ~= 5: 2.08 (~= 2.4 : 1) Have you got the volumes correct? I suspect the second should be 8cm3 not 9cm3, because then the volumes would be 125cm3 and 8cm3 and: ration of volumes = 125 : 8 ratio of sides = 3√125 : 3√8 = 5 : 2 (= 2.5 : 1)
