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Calculate the concentrations of C2H2O4, C2HO4?, C2O42-, and H+ ions in a 0.19 M oxalic acid solution.
[C2H2O4]
[C2HO4? ]
[H+]
[C2O42- ]
The relationship between Kp and Kc for gaseous reactions depends on the change in the total moles of gas between reactants and products. For each of the equations given at the right, select the correct relationship between Kp and Kc from the list ..
Standard reduction potentials are given on the next page. (a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the pH in the Pt | H+ | H2 half-cell? (c) What is the value of the equilibrium constant fo..
What is the value of the equilibrium constant at 500 K for a chemical equilibrium that as a delta H value of 250 kj/mol and a delts S value of 48 J/mol K?
(a) 0.519 M acetic acid (weak acid with Ka = 1.8e-05). (b) 0.802 M hydrocyanic acid (HCN) (weak acid with Ka = 4.9e-10). (c) 0.693 M pyridine (weak base with Kb = 1.7e-09).
Calculating the Equivalent Weight of an Unknown Substance, An unknown organic carboxylic acid, mp = 139-141 degrees Celsius, is burned with a yellow, sooty flame. The sodium fusion test showed that nitrogen was present.
Given the unbalanced equation: Ag2CO3 ® Ag + O2 + CO2, how many moles of Ag can be produced from 2.5 moles of Ag2CO3.
A copper wire with a mass of 4.32 g reacts with sulfur to form 5.41 g of a copper sulfide compound. a) Determine the number of moles of copper and sulfur in the compound. b) Determine the empirical formula of the product.
an aqueous solution of cacl2 has a vapor pressure of 84.0mmhg at 50 c . the vapor pressure of pure water at this
Write the names of the following compounds. Use proper spacing and spelling. (a) AgNO35 H2O (b) KCH3CO26 H2O (c) Ca(OH)24 H2O
What is the density of a substance if a 2.50mL sample has a mass of 0.880g at room temperature? ( show calculations) What is the specific gravity of the substance?
How are gases affected under different atmospheric pressures? In what ways might this affect you if you are moving to a different elevation?
Natural K consists of 2 stable isotopes 39K(93.10%) and 41K(6.88%) and one radioactive isotope 40K (0.0118%, t1/2 = 1.27x109 years).
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