1. Use the Aris method to determine the number of independent reactions in the following system. No. 4NH3 +502 + 4NO 4NH3 + 30₂ 4NH3 + 6NO 2NO+0₂ 2NO₂ 2NO → N₂ + O₂ N₂ + 20₂ → 2NO₂ For the sake of uniformity, number the chemical species as follows: 123456 + 6H₂O 2N₂ + 6H₂O → 5N₂ + 6H₂0 Species NH3 0₂ NO H₂O N₂ NO₂

7-17 If a certain reaction takes 16 h to go to completion at 10°C, what temperature should we run it if we want it to go to completion in 1 h?

Table 17-1 lists common half-reactions along with the standard reduction potential associated with each half-reaction. These standard reduction potentials are all relative to some standard. What is the standard (zero point)? lf is positive for a half-reaction, what does it mean? If is negative for a half-reaction, what does it mean? Which species in Table 17-1 is most easily reduced? Least easily reduced? The reverse of the half-reactions in Table 17-1 are the oxidation half-reactions. How are standard oxidation potentials determined? In Table 17-1, which species is the best reducing agent? The worst reducing agent? To determine the standard cell potential for a redox reaction, the standard reduction potential is added to the standard oxidation potential. What must be true about this sum if the cell is to be spontaneous (produce a galvanic cell)? Standard reduction and oxidation potentials are intensive. What does this mean? Summarize how line notation is used to describe galvanic cells.

When a mixture of hydrogen and bromine is maintained at normal atmospheric pressure and heated above 200. °C in a closed container, the hydrogen and bromine react to form hydrogen bromide and a gas-phase equilibrium is established. Write a balanced chemical equation for the equilibrium reaction. Use bond enthalpies from Table 6.2 ( Sec. 6-6b) to estimate the enthalpy change for the reaction. Based on your answers to parts (a) and (b), which is more important in determining the position of this equilibrium, the entropy effect or the energy effect? In which direction will the equilibrium shift as the temperature increases above 200. °C? Explain. Suppose that the pressure were increased to triple its initial value. In which direction would the equilibrium shift? Why is the equilibrium not established at room temperature?

Complete each of these reactions by filling in the blanks. Predict whether each reaction is product-favored or reactant-favored, and explain your reasoning. (a) (aq)+HSO4(aq)HCN(aq)+SO42(aq) (b) H2S (aq) + H2O() H3O+(aq) + _____ (aq) (c) H(aq) + H2O() OH(aq) +_____ (g)

Sodium chloride is added to water (at 25C) until it is saturated. Calculate the Cl concentration in such a solution. Species G(kJ/mol) NaCl(s) 384 Na+(aq) 262 Cl(aq) 131

What is true for this chemical reaction: 3CO(g) + Fe₂O3(s) = 3CO₂(g) + 2Fe(s)? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b C AHxn> 0; ASxn > 0 AHxn 0 AHxn 0; ASxn <0

ab and Mastering 7 > 2 F2 W S You may want to reference (Pages 245-246) Section 7.8 while completing this problem. # Calcium cyanamide reacts with water to form calcium carbonate and ammonia via the following reaction: CaCN₂ (s) + 3H₂O(1)→ CaCO3(s) + 2NH3(g) 3 E O 80 F3 D h My Questions | bartleby $ 4 2008 F4 R F % 5 F5 T openvellum.ecollege.com G ^ 6 How many grams of water are needed to react with 71.0 g CaCN₂? 195] ΑΣΦ 5 → mass H₂O = F6 Submit Part B Y How many grams of NH3 are produced from 5.22 g CaCN₂? 4 IVE ΑΣΦ mass NH3 = Submit Part C Request Answer mass CaCO3 = MacBook Air Request Answer H E Course Home How many grams of CaCO3 form if 156 g water react? Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us | & 7 44 F7 U IVE ΑΣΦ 5 Pearson *00 8 J DII F8 I 1 C → C ( 9 K Ċ DD F9 0 ? -0 ? ? L g g P 7.8: Mass Calculations for Chemical Reactions Review | Constants I Periodic Table g F10 P : (1 F11 { + 11 Ⓒ+ [ 11 1 F12…

Please help rewrite the chemicals

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