Adding more solute or more solvent can change a solution.
Acetic acid is added to the solution, but the pH of the solution does not change. Sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
The color change in Benedict's solution when heated is due to the reduction of copper ions in the solution. Initially, the blue-colored Cu(II) ions in Benedict's solution are reduced to form a reddish-brown precipitate of Cu(I) oxide. This color change indicates the presence of reducing sugars in the solution.
Yes, a precipitate is a physical change. It occurs when two solutions react to form a solid that settles out of the solution. This is a reversible change as the solid can be redissolved back into the solution.
Anything with a pH of 7 is neutral
Yes. The volume you have of a particular solution does not have anything to do with the concentration of that solution.
A solution does not have a chemical change, but it does have a physical change in state.
Anything that's "cloudy" is not a solution.
Litmus paper doesn't "do anything" to a solution. Litmus paper has some dyes on it, so some of the dyes might leak into the solution though. NaCl won't do anything to Litmus paper either. Salt, when dissolved in water, maintains a neutral solution. Litmus paper only changes color when there is a pH change. So, nothing really will happen.
it is a chemical change
Acetic acid is added to the solution, but the pH of the solution does not change. Sodium hydroxide, a base, is added to the solution, but the pH of the solution does not change.
To calculate the enthalpy change of a solution (H solution), you can use the formula: H solution H solute H solvent H mixing Where: H solute is the enthalpy change when the solute dissolves in the solvent H solvent is the enthalpy change when the solvent changes state (if applicable) H mixing is the enthalpy change when the solute and solvent mix By adding these three components together, you can determine the overall enthalpy change of the solution.
Yes, the time required to change the solution was different for the two beakers. Beaker A took longer to change the solution compared to Beaker B.
A solution is not a change; a solution is represented by a solute dissolved in a solvent; but dissolving (without chemical reaction) is a physical process.
Normal Saline Solution, or anything that contains 0.9% NaCl
The concentration of the salt solution does NOT change- it is saturated.
Dissolving is a physical change.
it is a solution