One of these answer choices are in the wrong place. Please indicate which is inc
ID: 547739 • Letter: O
Question
One of these answer choices are in the wrong place. Please indicate which is incorrect. Again, 5 out of 6 are correct. Only 1 is wrong. I'm 90% sure one of the answers in the "false" category are misplaced.
Thank you!
In a lab, silver nitrate, AgNO3, is dissolved in water until no solid is observed in the container. Then a solution of sodium chloride, NaCl, is added to the container. When you combine these aqueous solutions, there is no noticeable change in temperature; however, a solid precipitates and there is a slight change of color Signs of a Chemical Reaction A chemical reaction is a process by which one or more substances transform into different substances via a chemical change. Sometimes chemical reactions exhibit evidence that can be easily observed when they occur Which statements about the lab experiment involving silver nitrate and a sodium chloride solution are true? Drag each item to the appropriate bin Hints Reset Help True False I he lack of temperature change indicates a chemical reaction didnt Formation of a solid indicates a chemical reaction occurred. A chemical reaction did occur when the solutions were combined The color change of the solution indicates a chemical reaction occurred The initial disappearance of silver nitrate in water indicates a chemical reaction occurred. A chemical reaction occurred when silver nitrate was added to waterExplanation / Answer
1. Formation of a solid indicates a chemical reaction occurred. This statement is TRUE as the dissolution of AgNO3 in the water followed by the addition of NaCl solution gave a solid precipitate clearly indicating that the reaction has taken place.
2. The colour change of the solution indicates a chemical reaction occurred. This statement is TRUE as the change in colour is one of the visible signs of the chemical reaction.
3. The lack of temperature change indicates a chemical reaction didn't occur. This statement is FALSE as reactions are not dependent on temperature. some reactions may take place without any appreciable change in the temperature.
4. A chemical reaction did occur when the solutions were combined. This statement is TRUE as the reaction has taken place to form a precipitate after the combination of both the solutions.
5. The initial disappearance of silver nitrate in water indicates a chemical reaction occurred. This statement is FALSE as " for a chemical change to take place there should be a chemical reaction between two substances to give a new product". Thus dissolution of AgNO3 in water is a physical change but not a chemical change since AgNO3 is present in water as AgNO3
6. A chemical reaction occurred when silver nitrate was added to water. This statement is FALSE as explained in point 5.
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