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Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 5.3 g of iron are to be dissolved in 1.7 M HCl. What is the minimum volume (in mL) of the acid solution required to react with all of the iron?
For a chemical system at equilibrium, the forward and reverse rates of reaction are equal. 3. For an aqueous chemical system at equilibrium, the concentrations of products divided by the concentrations of reactants equals one.
what will be the new gas pressure if a gas held at 798 mmhg in a 400 ml released into a 3 l flask.what are the
A galvanic (voltaic) cell consists of an electrode composed of aluminum in a 1.0 M aluminum ion solution and another electrode composed of copper in a 1.0 M copper(II) ion solution, connected by a salt bridge. Calculate the standard potential for ..
Calculate the pH at 25 degrees C of a 0.25-M aqueous solution of oxalic acid (H2C2O4). (Ka1 and Ka2 for oxalic acid are 6.5 x 10^-2 and 6.1 x 10^-5, respectively.)
Calculate the pH at each of the following points in the titration of 50 mL of 0.2000M acetic acid using 0.222M NaOH. Ka= 1.8 x 10^-5 (show work)
If a radiation source has an intensity of 650 rem at 1.0 m, what distance is needed to decrease the intensity of expo- sure to below 25 rem, the level at which no effects are detectable
Draw the Fischer projection formula for 2R,4R-pentanediol. State how many stereoisomer of this compound. Also draw any two stereoisomers of 2R,4R-pentanediol, label the configurations of their steroecenters and indicate their relationship to 2R,4R..
What mass of NaOH is needed to precipitate the Cd^{2+} ions from 32.0 mL of 0.480 M Cd(NO3)2 solution?
Calculate the potential of the reaction of Ce4+ and Fe2+ under standard conditions. Using the equation, nFE=RTlnK, calculate the equilibrium constant for this reaction.
What is the cell potential when the concentration of Cu2+ has fallen to 0.250M? 2. What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370V?
A voltaic cell is constructed from a standard Mn2+|Mn half cell (Eored = -1.180V) and a standard Hg2+|Hg half cell (Eored = 0.855V).
Calculate the standard heat of reaction, or , for this reaction using the given data. Also consider that the standard enthalpy of the formation of elements in their pure form is considered to be zero.
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