0
What else can I help you with?
What's the oxidation number of cr in k2cro4?
6. To determine this the CrO4 ion must be 2- as it is balanced by 2 potassium ions which can only have a +1 charge. The oxygen atoms are considered to be present as O2- so all four contribute 8-. As the net charge is only 2- then chromium must have charge (oxidation number or state) of 6+.
What element is responsible for the yellow color of K2CrO4?
The element responsible for the yellow color of K2CrO4 is chromium. In this compound, chromium is in the +6 oxidation state which gives it a yellow color.
What is the oxidation number of K2CrO4?
K2CrO4 has 2x K(potassium) atoms per 1xCr (chromium) atom per 4xO (oxygen) atoms. The oxidation number of oxygen is always -2 (except when chemically bound to fluorine, which is the only element higher in electronegativity/ionization energy than oxygen) K is an alkali metal, (in column 1A of the periodic table) and henceforth will almost always have an oxidation number of +1. With this information, we can deduct that... 2 K atoms will each have +1 as an oxidation number (totaling +2) 4 O atoms will each have -2 as an oxidation number (totaling -8) We set the equation to zero (because the compound has no charge) so. 2K+Cr+4O=0 or 2(+1)+Cr+4(-2)=0 or +2+cr-8=0 simple algebra from here. cr=+6 each, individually, would be, k=+1, cr=+6, o=-2. Generally, you'll only be looking to figure out the oxidation number of cr in this problem.
Which element undergoes Oxidation in k2cro4 na2so3 hcl-kcl na2so4 crcl3 h2o?
Chromium undergoes oxidation in the given chemical equation. In this reaction, chromium changes from a +6 oxidation state to a +3 oxidation state, indicating that it has lost electrons and undergone oxidation.
What the name of K2CrO4?
This is an impossible reaction. However if you turn it around and do AgNO3 plus K2CrO4 then it is equal to Ag2CrO4 plus 2KNO3.
What's the oxidation number of cr in k2cro4?
6. To determine this the CrO4 ion must be 2- as it is balanced by 2 potassium ions which can only have a +1 charge. The oxygen atoms are considered to be present as O2- so all four contribute 8-. As the net charge is only 2- then chromium must have charge (oxidation number or state) of 6+.
What element is responsible for the yellow color of K2CrO4?
The element responsible for the yellow color of K2CrO4 is chromium. In this compound, chromium is in the +6 oxidation state which gives it a yellow color.
What is the oxidation number of K2CrO4?
K2CrO4 has 2x K(potassium) atoms per 1xCr (chromium) atom per 4xO (oxygen) atoms. The oxidation number of oxygen is always -2 (except when chemically bound to fluorine, which is the only element higher in electronegativity/ionization energy than oxygen) K is an alkali metal, (in column 1A of the periodic table) and henceforth will almost always have an oxidation number of +1. With this information, we can deduct that... 2 K atoms will each have +1 as an oxidation number (totaling +2) 4 O atoms will each have -2 as an oxidation number (totaling -8) We set the equation to zero (because the compound has no charge) so. 2K+Cr+4O=0 or 2(+1)+Cr+4(-2)=0 or +2+cr-8=0 simple algebra from here. cr=+6 each, individually, would be, k=+1, cr=+6, o=-2. Generally, you'll only be looking to figure out the oxidation number of cr in this problem.
Chemical formula for potassium and chromate?
Reaction of Potassium hydroxide or any potassium salt of a weak acid with chromic acid produces Potassium chromate. KOH + H2CrO4 ----> K2CrO4 + H2O K+ + H2CrO4 ----> K2CrO4 + H+
Which element undergoes Oxidation in k2cro4 na2so3 hcl-kcl na2so4 crcl3 h2o?
Chromium undergoes oxidation in the given chemical equation. In this reaction, chromium changes from a +6 oxidation state to a +3 oxidation state, indicating that it has lost electrons and undergone oxidation.
Why oxidation of formic acid does not produce HO COOH?
Oxidation of formic acid with K2CrO4 produces carbonic acid (HO COOH), but this molecule is very unstable, it tends to decompose in CO2 and H2O.
What the name of K2CrO4?
This is an impossible reaction. However if you turn it around and do AgNO3 plus K2CrO4 then it is equal to Ag2CrO4 plus 2KNO3.
How do you find the concentration of 3.50g of potassium chromate in 100 ml water?
K2CrO4 Molarity (concentration) = moles of solute/Liters of solution (100 ml = 0.100 Liters ) Find moles K2CrO4 first. 3.50 grams = (1 mole K2CrO4/194.2 grams) = 0.01802 moles K2CrO4 ----------------------------------------------next Molarity = 0.01802 moles K2CrO4/0.100 Liters = 0.180 M K2CrO4 -------------------------
A stock solution of chromium was prepared by dissolving 414.4mg K2cro4 in 0.1l water. What is the concentration of chromium in this stock solution in ppm?
The molar mass of K2CrO4 is 294.18 g/mol. Therefore, the number of moles of K2CrO4 in 414.4 mg is 0.00141 mol. As there are 2 moles of chromium in 1 mole of K2CrO4, the number of moles of chromium is 0.00282 mol. The concentration of chromium in the stock solution is 28,200 ppm.
What is the formula for K2CrO4?
The chemical formula for potassium chromate is K2CrO4.
How 1 mg of K2CrO4 has thrice the number of ions than the number of formula unit when ionized in water?
When 1 mg of K2CrO4 is dissolved in water, it will form 3 ions: 2 potassium ions (K+) and 1 chromate ion (CrO4^2-). This is because each formula unit of K2CrO4 contains 1 potassium ion and 1 chromate ion, resulting in a total of 3 ions when dissociated in water.
What is the dissociation equation for k2CrO4?
The dissociation equation for potassium chromate (K2CrO4) in water is: K2CrO4(s) -> 2K+(aq) + CrO4^2-(aq).
