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Chemical Calculations and Volumetric Analysis

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Chemical Calculations and Volumetric Analysis

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Questions and Answers

What is the unit of concentration, in addition to molarity, M?

mol dm-3 (correct)
mol L-1
mol dm-2
mol mL-1

What is the equation used to calculate enthalpy changes in a reaction?

Q=m∆T
Q=mcT
Q=mc∆T (correct)
Q=mT

What is the term that describes the minimum energy required for a reaction to occur?

Potential energy
Activation energy (correct)
Thermal energy
Kinetic energy

What is the process called when a catalyst bonds with a reactant molecule in a catalytic reaction?

Chemisorption (D) Signup and view all the answers

What is the term that describes a reaction in which the forwards and reverse reactions occur at the same rate?

Dynamic equilibrium (C) Signup and view all the answers

What is the purpose of calculating the relative formula mass of a substance?

To determine the amount of a substance in moles (C) Signup and view all the answers

What is the purpose of a standard solution in a titration?

To determine the concentration of a reactant (B) Signup and view all the answers

Which of the following types of titrations involves the use of phenolphthalein as an indicator?

Strong acid/strong base (B) Signup and view all the answers

What is the purpose of selecting appropriate titration data when calculating the mean titre?

To ignore anomalies in the data (A) Signup and view all the answers

What is the purpose of balancing symbol equations in chemical calculations?

To calculate the required quantities of reactants (C) Signup and view all the answers