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Why are the melting points of ionic compounds higher than the melting points of molecular compounds?
Question- 500.0 mL of 0.120 M NaOH is added to 625 mL of 0.200 M weak acid (Ka = 6.95 × 10-5). What is the pH of the resulting buffer. HA(aq)+OH-(aq)-------->H2O(l)+A-(aq)
A 1.3717-g sample of impure oxalic acid dihydrate, H2C2O4·2H2O, required 34.49 mL of 0.1211 M NaOH for titration to the phenolphthalein end point (both protons neutralized). Calculate the percent oxalic acid dihydrate in the sample.
Question- Calculate the pH at the equivalence point for the titration of 0.150 M methylamine (CH3NH2) with 0.150 M HCl. The Kb of methylamine is 5.0× 10-4.
iron is converted to Fe^2+ ions only and no Fe^3+ ions are formed. 25.0cm3 of the solution were acidified and titrated against a 0.0185 mol/dm^3 solution of potassium dichromate (VI). The volume required was 31.0cm^3. Calculate the percentage of i..
an unknown hydrocarbon a with formula c6h12 reacts with 1 molar equivalent ofh2 over palladiumcatalyst. hydrocarbon a
calculate the concentration of all soluble Hg(II) species. Which Hg(II) species is most prevalent? Assume there are no solids present, that the major ligands present are Cl- and OH-, and ignore activity corrections.
Part 1: Using the following reaction: Aqueous lead (II) nitrate reacts with aqueous lithium sulfate.
Compute the volume of 0.100M HCl to add to 50ml of 0.1M ammonia to form a mixture that has a pH of 9.00
a kilogram of aluminum metal and a kilogram of water are each warmed to 75 degree celsius and placed in two identical
State the mechanistic equations for each step in the preparation of p-bromoaniline from aniline showing how all intermediates are formed. Why does bromination of acetanilide stop at the monobromo stage
Describe the kinetics of the photochemical process of the absorption of a proton by a reactant resulting in proton formation.
A buffer was prepared by dissolving .200 mol of the weak acid Ha (ka 1.00x10^-5) plus .050 mol of its conjugate base Na+A- in 1.00L find the pH
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