Which is the best indicator for giving a color change at the equivalence point?

There are different types of indicators for different neutralization reactions. The best indicator for giving a colour change at the equivalence point of a neutralization reaction depending on the pH range of a particular indicator and the equivalence point of the reaction. For instance, the best indicator for a neutralization reaction that involve the titration of NaOH with an acid which result in 9.00 equivalence point is phenolphtalein. This is because the equivalence point which is 9.00 is within the pH range of the indicator, which is between 8.0 to 10.1.

The correct answer is c b c a d

Answer : option c) heat is released during the process.explanation :

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.