1. Write the equilibrium expression and identify the specific equilibrium constant sympol if possible, otherwise use Ke. (a) 2 H2O(1) = H3O* (aq) + OH´(aq) (b) HCN (aq) + H2O (1) = H3O* (aq) + CN¯ (aq)

Based on the informaton presented below, answer the following questions. An ether solution contains the following components. 2,3,4,5-tetramethylbenzene benzyl alcohol 2-hydroxybenzoic acid This solution is extracted with a 1.0 M solution of NaOH, that is immiscible with ether. The 2-hydroxybenzoic acid will be recovered from the layer.

In this treatment level, part of suspended solids and suspended organic matter is removed. * Secondary Preliminary Tertiary O None of the above

105 100 95 75 0 1 2 3 4 5 67 8 9 10 11 12 13 14 15 16 17 18 19 20 Volume distillate collected (mL) 1. Indicate the volume of the distillate at which you should stop collecting to make sure that the distillate is only composed of one component. 2. Indicate the boiling point range involved in the collection of this amount of distillate. Temp in Still Head ("C)

How do I find the number of moles in a solution if I have the concentration and the volume? Do I multiply the concentration by the volume and then multiply that answer by the molar mass of the solution? PLEASE DO FAST ASAP

d. CECH 1. 1 eq. CH3CH₂MgBr 2. H3O+ 3. DMSO, COCI2, (CH3CH2)3N, CH2Cl2

Bromophenol blue= max 600 concentration (M) of the original solution =10.0 mg/L absorbance solution 1 = 0.20 solution 2 = 0.43 %3D %3D solution 3 = 0.66 solution 4 = 0.93 %3D solution 5 = 1.10 I need the concentration (M) in all the solution

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Please answer #4,5,6,7