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When the reaction with potassium had finished what would happen if you added universal indicator solution to the water?
If you add universal indicator solution to the water after the reaction with potassium, the indicator will change color depending on the pH of the solution. Potassium reacts with water to form potassium hydroxide, which is a strong base. The solution will likely turn purple or blue indicating a high pH.
Standardization of sodium thiosulphate by potassium iodate?
In this titration method, a solution of potassium iodate is used as the titrant to determine the concentration of sodium thiosulfate solution. It involves adding potassium iodate to sodium thiosulfate solution until the reaction is complete, as indicated by the disappearance of the starch-iodine complex's blue color. The reaction is: 5Na2S2O3 + 2KIO3 + 2H2SO4 -> 2Na2SO4 + K2SO4 + 5I2 + 5H2O.
What happens when carbon dioxide gas is passed through calcium hydroxide solution?
When carbon dioxide gas is passed/bubbled through aqueous calcium hydroxide (also known as 'limewater'), a white precipitate will be formed. This means that the solution will turn cloudy/milky due to the formation of that white precipitate.Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l)The precipitate, calcium carbonate, is only sparingly soluble in water. It will exist as a suspension in the resulting solution.But when excess carbon dioxide is added, this reaction takes place instead:CaCO3(s) + H2O(l) + CO2(g) → Ca(HCO3)2(aq)The calcium carbonate undergoes further reaction with water and carbon dioxide to form calcium bicarbonate (or calcium hydrogen carbonate), which is soluble. Thus the precipitate appears to 'disappear' or 'dissolve'. Thus, a colourless solution is formed.----- Other answers -----Water is added to give calcium hydroxide, and carbon dioxide is passed through this solution to precipitate the desired calcium carbonate, referred to in the industry as precipitated calcium carbonate (PCC):if carbon dioxide is passed through it it will turn cloudy and if it is done for to long then it will turn colourless.
Which color is given by glycogen on reaction with iodine?
reddish-brown * the color of glycogen solution with drops of NaCl and Iodine solution is Dark Orange. :) *NaCl will intensify the colour as it fulfills the optimum ionic requirement of the reaction
How do monosaccharides react to iodine-potassium iodide?
Monosaccharides react with iodine-potassium iodide solution by producing a color change. If the monosaccharide is present, the solution will turn from yellow-brown to a blue-black color due to the formation of a starch-iodine complex. This reaction can be used to test for the presence of monosaccharides in a sample.
How does potassium and sodium thiosulphate turn yellow?
Potassium and sodium thiosulfate can turn yellow due to the formation of a colored complex with iodine. When iodine is added to a solution containing thiosulfate, it forms a triiodide ion which has a yellow color. This reaction is commonly used in chemistry as an indicator for the presence of thiosulfate ions in solution.
Does limewater absorb CO2?
Yes, limewater (calcium hydroxide solution) reacts with CO2 in the air to form insoluble calcium carbonate, causing the limewater to turn milky or cloudy. This reaction is often used as a test for the presence of CO2.
What air makes colorless caustic potash turn milky?
Carbon dioxide gas reacts with caustic potash (potassium hydroxide) to form potassium carbonate, which is insoluble in water. This reaction produces a milky or cloudy appearance in the solution.
How can you identify carbon dioxide in a reaction?
Carbon dioxide can be identified in a reaction by using limewater, a dilute solution of calcium hydroxide. When carbon dioxide is bubbled through limewater, it reacts to form calcium carbonate, which causes the solution to turn cloudy. Additionally, you can use a pH indicator; carbon dioxide lowers the pH of a solution, indicating its presence. These methods provide simple yet effective means of detecting carbon dioxide in chemical reactions.
If air is bubbled through hydrogen carbonate solution which is then poured into a test tube with small snails what colour would it change to?
The hydrogen carbonate solution would turn cloudy white due to the formation of calcium carbonate precipitate as a result of the reaction between hydrogen carbonate and calcium ions in the snails' shells.
What colour will universal indicator turn in a neutralization reaction?
It turns green on neutralisation reaction.
How can you test for carbon dioxide in thermal decomposition reaction?
You can test for carbon dioxide in a thermal decomposition reaction by passing the gas produced through limewater. If carbon dioxide is present, the limewater will turn cloudy due to the formation of calcium carbonate. Alternatively, you can use pH indicator paper, which will turn from blue to green or yellow in the presence of carbon dioxide.
When you add acid to a carbonate do the universal indicator turn milky?
Yes, when acid is added to a carbonate, a chemical reaction occurs releasing carbon dioxide gas. The carbon dioxide gas forms bubbles, causing the solution to become milky or cloudy, which is visible through the universal indicator.
When the reaction with potassium had finished what would happen if you added universal indicator solution to the water?
If you add universal indicator solution to the water after the reaction with potassium, the indicator will change color depending on the pH of the solution. Potassium reacts with water to form potassium hydroxide, which is a strong base. The solution will likely turn purple or blue indicating a high pH.
When do lime water turns chalky?
When carbon dioxide is passed through lime water, it forms calcium carbonate, which makes the solution turn chalky or cloudy. This reaction occurs as the carbon dioxide reacts with the calcium hydroxide in the lime water to form the insoluble calcium carbonate precipitate.
Why does well water turn cloudy after adding bleach?
Cloudiness in well water after adding bleach can be due to a reaction between the bleach and dissolved minerals present in the water, such as iron or manganese. This reaction can create particles that make the water appear cloudy. It's important to let the water settle and then run the taps to flush out the cloudy water before using it for drinking or other purposes.
When a piece of copper is placed in a lead nitrate solution what will happen?
A redox reaction will occur, with copper displacing lead from the lead nitrate solution to form copper nitrate and lead. The copper will turn into a reddish-brown color due to the formation of copper ions in the solution.
