Determining the ph of a solution
Question: What is the pH of a solution containing 0.010 HCl plus 0.040 KClO4 with an activity coefficient of [H+] = 0.86?
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The freezing-point depression of a 0.100 m (molality) MgSO4 solution is 0.225 degrees Celsius. Determine the experimental van't Hoff factor of MgSO4 at this concentration.
Balance the following equations. (Use the lowest possible whole-number coefficients. These may be zero.) (a) ClO3-aq) + As(s) Æ HClO(aq) + H3AsO3(aq) ClO3
Write a balanced chemical equation for the following reaction in a basic solution. ClO4-(aq) + Cu(s) ---> ClO3- (aq) + Cu(OH)2(s) 4 stars for whoever answers correctly
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Calculate the work done (in J) on the surrounding atmosphere (1atm pressure, 25.8 oC) by the evolution of hydrogen in the subsequent reaction. State any assumptions you have made?
For each of the compounds below, first write a structural formula and then indicate which of them is likely to absorb in the UV region. Briefly explain your reasoning. A. cyclohexanol B. 2,4-hexadienal C. 2-methyl-5-vinylpyridine
Gaseous NOBr is placed in a closed container at -180 oC, where it partially decomposes to NO and Br2: 2 NOBr(g) 2 NO(g) + 1 Br2(g) At equilibrium it is found that p(NOBr) = 0.008230 atm, p(NO) = 0.004080 atm, and p(Br2) = 0.004130 atm.
Calculate the pH of a buffer solution that is 0.12 M lactic acid (HC3H5O3)and 0.1 M sodium lactate (NaC3H5O5). Ka for lactic acid = 1.4 x 10-4.
A student placed 10g of Mg(OH)2 into a flask and added 500 ml of water. The student then took 100 ml of the Mg(OH)2 solution and reacted with HCl(aq). If 13.75 ml of .010M HCL reacted with the OH-(aq), what was the concentration of hydroxide ion i
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