Academy of Art University Chemistry Worksheet

Description

Hi

I have HW in chemistry class, they are 5 Qs and I need the full answers to give them to my teacher, Just watch the videos and answers the Qs

QUESTION 1

  1. Enthalpy of decomposition of H2O2. Please show work in a scratch paper. You must submit your scratch paper to receive credits.Initial temperature (from plot): °CFinal temperature (from plot): °C∆T: °CHeat change for the reaction mixture (qsolution): JHeat of the reaction: KMoles of H2O2 reacted: molEnthalpy of decomposition (experiment): kJ/mol

QUESTION 2

  1. How does your calculated value of the enthalpy change of formation of H2O2 (aq) compare to the literature value of –191.2 kJ/mol? Please calculate the % error.
    % error = [a]

QUESTION 3

  1. Record your observations of color during the experiment in the table below:

    Observation of color
    Fe(NO3)3 catalyst
    H2O2 solution before catalyst was added
    H2O2 solution after catalyst was added
    H2O2 solution at the end of the experiment

QUESTION 4

  1. What is the purpose of the catalyst?

QUESTION 5

  1. What is the evidence that the catalyst is not consumed during the overall reaction?