Can exothermic chemical reactions be spontaneous? Why? 3 (12pt) = rial E
All exothermic reactions are favorable. Using your own words, explain why some exothermic reactions are non-spontaneous even when they are all favorable. HTML Editor
4. Hot packs. All reactions are spontaneous; note that some are exothermic and some are endothermic. How can a spontaneous reaction Increase in energy? Hot packs, exothermic: CaClas) → Calag) + 2CH(aq) 4,H=-81.35 kd/mol. MgSO4(s) → Mg?"(aq) +507(ag) AH-91.22 kJ/mol Just plain hot-watch out! NaOH(s) → Na'(aq) + OH'(aq) AH = -44.50 kJ/mol. a. Pick one of the above reactions and calculate how much 1.0 g of the solid would increase the temperature of 100 mL of water. Let your...
Are all the exothermic reactions spontaneous? Are all the endothermic reactions non- spontaneous? Explain your reasoning using appropriate equations. 4.
Question 4 1 pts Le Chatelier's principle states that: Only exothermic reactions can reach chemical equilibrium. Only reactions in which a catalyst is present can reach chemical equilibrium. If a chemical equilibrium is disturbed, the system will try and reestablish equilibrium. If a chemical equilibrium is disturbed, the temperature of the system will always decrease.
2. Why do some reactions that are not spontaneous at room temperature become spontaneous at higher temperatures? Explain your reasoning using appropriate mathematical equations
Which statement is true? A. Spontaneous changes are always accompanied by an increase in the enthalpy of the system. B. Spontaneous changes are always accompanied by a decrease in the entropy of the system. C. Spontaneous changes are always accompanied by a decrease in the enthalpy of the system. D. Most highly exothermic chemical reactions are also spontaneous chemical reactions. E. Spontaneous changes are always accompanied by an increase in the entropy of the system. For a certain chemical reaction,...
Based on the sign of E cell classify these reactions as
spontaneous or nonspontaneous as written assume standard
conditions
Based on the sign of E degree_cell, classify these reactions as spontaneous or non spontaneous as written. Assume standard conditions.
C2 T10HW Question 4 Homework • Answered Let's think about how spontaneity links to chemical reactions. Indicate whether the following statements are true or false by matching each statement on the left) with its correct response (on the right). Drag and drop options on the right-hand side and submit. For keyboard navigation: - Navigate options with the up/down arrow keys - Hit enter or space to grab an option With option grabbed hit enter or space to drop it into...
Also, can you explain why it would either become more or less
spontaneous please.
3. Balance the following redox reactions, adding H20 and H+ (or OH) as needed. Predict for each one whether the reaction would become more or less spontaneous at higher pH. Procedures for balancing redox reactions in acid or base can be found in Chapter 4.1 of our Wikibook (a) MnO4 (aq) + N2O(g) (6) Cr2O72- (aq) + S2032- (aq) c) H2O2 (aq) + HI (aq) —...
Use the following half-reactions to write 3 spontaneous
reactions, calculate E°cell for each reaction, what is
the n number (number of electrons transferred).
Au+ (aq) + e− → Au
(s) E° = 1.69
V
N2O (g) + 2H+ (aq) + 2 e− →
N2 (g) + H2O (l) E° =
1.77 V
Cr3+ (aq) + 3 e− → Cr
(s) E° = -0.74 V
Question 7 0.36 pts Use the following half-reactions to write 3 spontaneous reactions, calculate Eºcell for...