CHEMISTRY COMMUNITY

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Which is the stronger oxidizing agent for species in aqueous solution, Cu+2 or Ag+, under standard conditions? (a) Evaluate the standard potential of the appropriate cell; (b) write the net ionic equation for the corresponding cell reaction; (c) state your answer to the question.
Thanks!

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When is the use of common logarithms in the Nernst equation useful?

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Based on how the periodic table is organized, can you identify some of the physical properties that are associated with the ionic and covalent character?

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Why is calcium hydrogen carbonate (bicarbonate) more soluble than calcium carbonate?

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Why does borosilicate glass expand less than other glasses when it is heated?

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What accounts for the difference in properties of carbon and silicon oxides?

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Is the existence of alien life forms based on silicon plausible?

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I am not sure if this belongs to this section but, what is the molecular origin of friction?

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I read recently that no virus can survive in al alkaline environment. Is this true?

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By what factor does the unique average reaction rate change if the coefficients in a chemical equation are doubled?

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Ant venom contains formic acid (HCOOH; “formica” is the Latin word for ant). Suppose you are at a pharmaceutical company working on a quick antidote and need to estimate the pH at the stoichiometric point when titrating a solution of formic acid. Estimate the pH at the stoi- chiometric point of the ...

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The analyte consists of 25.00 mL of 0.250 m NaOH(aq), and the titrant is 0.340 m HCl(aq). Calculate (a) the pH of the original analyte solution and (b) the pH after the addition of 5.00 mL of the acid titrant.

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At 25 8C, K = 3.2 * 10^-34 for the reaction 2HCl(g) <--> H2(g) 1 Cl2(g). If a reaction vessel of volume 1.0 L is filled with HCl at 0.22 bar, what are the equilibrium partial pressures of HCl, H2, and Cl2?
I don't know how to approach this problem... Thanks in advance!

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Why is the standard energy of H2 --> 2H(+) + 2e equal to 0?

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What is meant by the electrochemical series?

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How do I know when to use log instead of ln in the Nernst Equation?

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How do you distinguish a conceptual half-reaction from an actual ionization?

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What is the value of K for a reaction that has Ecell = 0?

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Can any type of salt work to make the salt bridge or are there any specific types of salts that cannot be used?

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What metal impurities cannot be removed from copper during refining by electrolysis?

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First, n = 2.
Second, it's -0.45.
So you will have e^-35.02... which is equal to 6.1x10^-16

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Determine the standard cell potential:
2NO3(-)(aq) + 8H(+)(aq) + 6Hg(l) -->3Hg2(+2)(aq) + 2NO(g) + 4 H2O(l)

Thanks!

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Calculate the standard reaction Gibbs free energy for the following cell reactions:

(b) 6 Fe(3+) (aq) + 2Cr(+3) (aq) + 7 H2O(l) --> 6 Fe(+2) (aq) + Cr2O7(-2) (aq) + 14H+ (aq), Ecell° 5 21.29 V

How do I find n for deltaGº= -nFE_cellº?

Thanks!

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Balance P4 → H2PO2- + PH3 in basic solution. I know that the half reactions are: 3 x (P4 + 8OH- → 4H2PO2- + 4e-) 12H2O + P4 + 12e- → 4PH3 + 12OH- and the answer is 3OH- + P4 → 3H2PO2- + PH3. But I don't know how the two half equations lead to that answer. Can somebody do it step by step, please?

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Balance using oxidation and reduction half-reactions (takes place in an acidic solution). Please step by step! Thank you so much
. MnO42(aq) 1 H2SO3(aq) --> Mn21 (aq) 1 HSO42(aq)

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Why does q_ice= -q_water?
Thanks!

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Why is the standard enthalpy of formation for O2(g) = 0?

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If the question does not specify which type of expansion it is, should we assume it is irreversible?
thanks

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What is the difference between reversible and irreversible expansions?

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Why is mass conserved during chemical reactions?

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Can we have negative entropies and if yes, what does this mean?

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What exactly is the difference between specific heat capacity and molar heat capacity?

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How does the enthalpy change when the reaction is reversed?

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Why does the entropy of a close system can decrease only if the entropy of its surroundings increases by a greater amount?

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If bonds are forming and breaking all the time then why don't things fuse or bind together when they touch each other?

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What does K mean in the Boltzmann equation?

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Why does a glass of hot water freeze faster than a glass of cold water?

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Are ionic bonds broken when salt dissolves in water? And if so, then is dissolving a chemical change?

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Can photons be directly seen?

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Calculate the pH, pOH, and percentage protonation of sol- ute in each of the following aqueous solutions: (a) 0.057 m NH3(aq)

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Estimate the concentrations of (a) H3O1 and (b) OH2 at 25 8C in 6.0 3 1025 m HI(aq).

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How do glow sticks glow?

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How will changing the volume affect the pressure of a system at equilibrium?

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The concentration will change and momentarily the system will be back of equilibrium but after a while, the system will go back to the same K. K will not change as long as the temperature doesn't.

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The system might go out of equilibrium if the pressure changes the volume ( c = m/v) which will cause a change in the concentration. Then, however, the reaction will respond accordingly to minimize the effect of the change in pressure, leading to the system back to the same K.

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K changes since it is temperature-dependent. Cooling an endothermic reaction shifts equilibrium to left and K decreases. Heating it [censored] equilibrium to the right and K increases.

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My question actually was referring to why do positive and negative charges attract? Protons and electrons attract because positive (protons) and negative (electrons) attract. But why does this occur?

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In and electromagnetic gradient, which force is stronger, the electric or the magnetic?

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Why do protons and electron attract?

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Does the ideal gas law works the same for noble gases as it does for the rest?

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In which experiment does the electron behave like a wave? In which one does it behave like a particle?

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Why are electrons considered both particles and waves?

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