What would happen when a solution of potassium chromate is heated with excess of dilute nitric acid?
Table of Contents
- 1 What would happen when a solution of potassium chromate is heated with excess of dilute nitric acid?
- 2 What do you observe when hno3 is added to the test tube containing the chromate solution?
- 3 What happens when KI solution is added to acidified K2Cr2O7 solution?
- 4 How do you make potassium chromate solution?
What would happen when a solution of potassium chromate is heated with excess of dilute nitric acid?
When a solution of potassium chromate is treated with an excess of dilute nitric acid,Cr2O72- and H2O are formed.
What happens when potassium chromate is acidified?
What is the action of acidified potassium dichromate on potassium iodide (KI)? Acidified potassium dichromate, K2Cr2O7 oxidises potassium iodide (KI) to iodine, increasing the oxidation state of iodine from -1 to zero.
What would you see if you added dilute acid to a solution containing chromate ions?
Testing for chromate(VI) ions in solution Typically, you would be looking at solutions containing sodium, potassium or ammonium chromate(VI).
What do you observe when hno3 is added to the test tube containing the chromate solution?
As nitric acid is added to the chromate solution, the yellow color turns to orange. When sodium hydroxide is added to the chromate solution, the orange color turns back to yellow. The sodium hydroxide reacts with hydrogen ions, removing them from the solution.
What would happen if a solution of potassium chromate?
To a solution of potassium chromate if a strong acid is added it changes its colour from yellow to orange.
What is the molecular formula of potassium chromate?
K₂CrO₄
Potassium chromate/Formula
What happens when KI solution is added to acidified K2Cr2O7 solution?
Acidified potassium dichromate reacts with potassium iodide and oxidizes it to I2 .
What happens when so2 is passed through acidified K2Cr2O7 solution?
Sulfur dioxide gas turns acidified potassium dichromate solution from orange to green reduced chromium +4 to +3.
What occurred when you added the sulfuric acid to the potassium chromate solution?
H2SO4 is added to aqueous solution of potassium chromate, yellow colour of solution turns to orange colour.
How do you make potassium chromate solution?
Store the solution in a brown bottle. Potassium chromate indicator solution: (approximately 0.25 molL-1) Dissolve 1 g of K2CrO4 in 20 mL distilled water. If the seawater contains traces of solid matter such as sand or seaweed, it must be filtered before use.