An aqueous solution is prepared that is initially 0.100 M CdI4-2. After the equilibrium is established, the solution found to be 0.013 M in Cd2+. What are the equilibrium concentrations?

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What is the concentration of fluoride ions at equilibrium in a sample of hydrofluoric acid if the initial concentration of hydrofluoric acid is 0.35 M and the Kc is 7.4 x 10-4M?

Consider the general reaction below. 2A(g) + B₂(g) = 2AB(g) K = 6.4 x 10-6 @ 298 K The reaction was initiated by combining 0.70 mol A and 0.90 mol B2 in a 2.0 L container. Calculate the equilibrium concentrations of the components. What is the equilibrium concentration of AB? 10[? ] [AB] = [?] x 10¹ M

An equilibrium reaction between chromate ions, CrO4 2- (yellow), and H+ ions is established to produce dichromate, Cr₂072- (orange). Note the colours. A student adds NaOH to a test tube containing an orange mixture of the above reagents. What is observed? 01. The solution turns from orange to yellow O 2.A precipitate forms 3. The solution tuimns from orange to colourless O4. The solution remains orange

a Choose the equilibrium expression for the following heterogeneous equilibrium: Cag N2 (s) +6H, 0(1) = 3Ca(OH)2 (8) + 2NH, (g) OK= [NH," [Ca(OH),) K = [Ca, N2] NH, [Ca(OH), [Ca,N2][H,O]° [NH,] K = 16 券 K= [H, O]° b Choose the equilibrium expression for the following heterogeneous equilibrium: 4Fe(s) +302(g) 2Fe, O3 (s) 1. K = OK= [0,1'[Fe(s)] Fe, Os = [0,] OK- K 3. 1. [02]

Write the equation for the equilibrium constant (K) of the reaction studied in this exercise. 2CrO4 2- (aq) + 2H+ (aq) = Cr₂O72- (aq) + H₂O(1) 1E T² B 1 U T₂ 0 Word(s)

The questions below refer to the following system: Co(H2O)6 + 4 CI=C0C1 + 6H,O (pink) (blue) When cobalt(II) chloride is added to pure water, the Co-" ions hydrate. The hydrated form then reacts with the Cl ions to set up the equilibrium shown here. Which statement below describes the change that the system will undergo if water is added? Select one: O a. More chloride ions will be produced. O b. The equilibrium will shift to the right. O c. There will be less of the hydrated cobalt ion at the new equilibrium position. O d. More water will be produced. O e. The color will become more blue. here to search F4 F6 F7 F8 F10 F11 F12 Prisc %23 %24 & 4. 5 6 E R T G B

A solution is 0.085 M potassium carbonate, K>CO.. Determine the pH of the solution and the equilibrium concentration (in mol L'') for each of the indicated ions. pH = [K°]eq = M [HCO3 leg = _M [CO,?leq = M The compound gold (III) iodide, Aul3, has Ksp=1.0 x 1046, and a molar mass of 577.67 g. Write the net ionic reaction for this compound dissolving in water. What are the molar concentrations of Au3* and of I- in a saturated solution of gold (III) iodide? What is the solubility (in g/ L) of the compound Aul3 in pure water? Reaction: [Au3*) = M M Pure water solubility_ g of Aul3 per liter.

Nitrogen monoxide, NO, is formed in automobile exhaust by the reaction of N2 and Og (from air). N2 (9) + O2(9) - 2NO(9) The equilibrium constant (K.) is 0.0025 at 2127°C. If an equilibrium mixture at this temperature contains 0.082 mol N, and 0.026 mol O2 per liter, what is the concentration of NO? Concentration = M