‘Mass of ethanol’ should be identified. Concept Introduction: 0. 358 pt of mouthwash is present and we can convert pt into mL by using conversion factor. It can be given as: 1 pt = 473.18 mL And we have provided with density, from it we can calculate the mass of solute in a tube by using density as follows; d = m v Given: Mouthwash is 21 .6 % ethanol by mass Volume of mouth wash = 0. 358 pt d = 0 .876 g cc

Question

1. Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 Potential Energy (kJ) 600 400 200 0 -200- -400 -600- -800 (i) Cl₂ (g) + Pt(s) → 2Cl (g) + Pt(s) (ii) Cl (g)+ CO (g) + Pt (s) → CICO (g) + Pt (s) Ea = 1550 kJ Ea = 2240 kJ (iii) Cl (g) + CICO (g) → Cl₂CO (g) Ea = 2350 kJ AH=-950 kJ ΔΗ = 575 ΚΙ AH=-825 kJ a. Draw the potential energy diagram for the reaction. Label the data points for clarity. The potential energy of the reactants is 600 kJ Reaction Progress b. What is the overall chemical equation? c. What is the overall change in enthalpy for the above chemical reaction? d. What is the overall amount of activation energy for the above chemical reaction? e. Which reaction intermediate would be considered a catalyst (if any) and why? f. If you were to add 2700kJ of energy to the reaction (e.g. 2700 kl of heat or electricity), would you be able to make the reaction reverse itself (i.e. have…

Answer 1

Question

Chapter 2, Problem 2.136CQ

Interpretation Introduction

Interpretation:

‘Mass of ethanol’ should be identified.

Concept Introduction:

$0. 358 pt$ of mouthwash is present and we can convert $pt$ into $mL$ by using conversion factor.

It can be given as: $1 pt = 473.18 mL$

And we have provided with density, from it we can calculate the mass of solute in a tube by using density as follows;

$d = \frac{m}{v}$

Given:

Mouthwash is $21 .6 %$ ethanol by mass

Volume of mouth wash = $0. 358 pt$

$d = 0 .876 \frac{g}{cc}$

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