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Fe3+(aq) + SCN-(aq) to Fe(SCN)2+(aq). Identify the reactant or product that increases or decreases when Fe(NO3)3 is added.
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- 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) + Br(aq) NH3(aq) + HBr(aq) (b) CH3COOH(aq) + CN(aq) ________ (aq) + HCN(aq) (c) ________ (aq)+H2O () NH3(aq) + OH(aq)Apatite, Ca5(PO4)3OH, is the mineral in teeth. On a chemical basis explain why drinking milk strengthens young children’s teeth. Sour milk contains lactic acid. Not removing sour milk from the teeth of young children can lead to tooth decay. Use chemical principles to explain why.What are the products of each of the following acid-base reactions? Indicate the acid and its conjugate base and the base and its conjugate acid. (a) HCIO4 + H2O (b) NH4 ++ H2O (c) HCO3 + OH
- The grid has six lettered boxes, each of which contains an item that may be used to answer the questions that follow. Items may be used more than once and there may be more than one correct item in response to a question. Place the letter(s) of the correct selection(s) on the appropriate line. Could dissolve Zn(OH)2 _____________ Could be used to prepare a buffer from __________ Halfway to the equivalence point in the titration of a weak, monoprotic acid with strong base ________ SO2-related atmospheric phenomenon __________ Species formed by a Lewis acid-base reaction ________ General condition required for precipitation to occur ________ [conj. base] = [conj. acid] in a buffer ___________6. Consider the following equilibria: 1 Ca²+ (aq) + 2 OH- (aq) 2 ¹2 H₂O(1) H₂O*(aq) + OH-(aq) Ca(OH)₂(s) K=1.5 x 105 K = 1.0 x 10-14 Given these equilibria, what is the equilibrium constant, K, for the following reaction? 3: Ca(OH)2 (s) + 2 H3O*(aq) ≤ Ca²+ (aq) + 2 H₂O(1)O KINETICS AND EQUILIBRIUM Writing the concentration equilibrium expression for a... Write the concentration equilibrium constant expression for this reaction. Cu(s)+ 2 Agt(aq) →Cu²+ (aq)+ 2 Ag(s) X 00 0/5
- Write the equilibrium expression for each of the following reactions. Be sure to pay attention to physical states: a)2 O3 (g) 3 O2(g) b)5 Fe+2(aq) + MnO4-(aq) + 8 H+(aq) 5 Fe+3(aq) + Mn+2(aq) + 4 H2O(l)What is the equilibrium molar concentration of Co3+ in a solution prepared by adding 0.1893 mol of Co(NO3)3 to a solution of NH3? The final volume of the solution was 1.00 L and the concentration of NH3 was 2.6390 M before equilibrium was established.Co3+(aq) + 6NH3(aq)↔[Co(NH3)6]3+(aq) Kf = 5.00e33 4.37e-34 3.28e-36 2.31e-36 4.66e-368.Iron fluoride (FeF2) dissociates according to the following equation: FeF2(s) ⇌ Fe2+(aq) + 2F–(aq) If the [Fe2+] in a saturated solution is measured to be 2.05 × 10–4 mol/L, what is the concentration of fluoride (F–) ions in a saturated solution? a,.1.03 × 10–8 mol/L b.4.10 × 10–4 mol/L c.4.20 × 10–8 mol/L d.2.05 × 10–4 mol/L
- Human blood has a pH of approximately 7.4 due to the carbonic acid/bicarbonate ion (H2CO3/HCO3−) buffer system. Any pH changes below 6.8 or above 7.8 can lead to death! Carbonic acid dissociates to form water and carbon dioxide in the equilibrium shown below. This process is crucial in respiration. H2CO3 (aq) ⇋ CO2 (g) + H2O pKa1 = 2.77 Carbonic acid dissociates in water to form the bicarbonate ion and the hydroxonium ion by the following equilibrium reaction:H2CO3 (aq) + H2O ⇋ H3O(aq)+ + HCO3− pKa2 = 3.70 (i) If there is a 25% increase in carbonic acid levels as per pKa1, explain how the body would deal with this change.In an aqueous chloride solution cobalt(II) exists in equilibrium with the complex ion CoC14². Co²+ (aq) is pink and CoC14² (aq) is blue. At low temperature the pink color predominates. At high temperature the blue color is strong. If we represent the equilibrium as: Co²+ (aq) + 4Cl¯¯(aq) ⇒ CoCl² (aq) We can conclude that: 1. This reaction is O exothermic. O endothermic. O neutral. O More information is needed to answer this question. 2. When the temperature is decreased the equilibrium constant, K: O increases. O decreases. O remains the same. O More information is needed to answer this question. 3. When the temperature is decreased the equilibrium concentration of Co²+: O increases. O decreases. O remains the same. O More information is needed to answer this question.What is (are) the most likely product(s) for the following reaction? I || Br ||| IV OH HBr Br Br || V Br. Br |||
