c) to the right 4. Remove the CO2 gas being produced 5. concentrations and totals in equilibrium change over time. 6. a) The solution will be yellow. K2CrO4 ( K2+(aq) + CrO42-(aq) b) The solution will be orange. The hydrogen ion will react with chromate to form an equilibrium and produce some dichromate and water. This reaction will cause the amount of chromate to decrease in order to form more products and the equilibrium will shift to the right. c) The NaOH‚ specifically
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shift is basically an exchange of chloride ions through the capillaries of the system circuit. In the blood plasma‚ there is large amount of carbonic acid and when there is an increase in carbonic acid than the balance of hydrogen ions and carbonate ions dissociate to maintain a balance of homeostasis in the pH of the blood. The red blood cells help to maintain this system by buffering the system of carbonic acid and causing detachment of the above ions. The release and detachment is buffered by
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Then determine whether the atom is paramagnetic or diamagnetic. 7. Determine which of the species shown below are isoelectronic with neon‚ then decide which one of those would have the smallest radius. Oxide ioin Argon Magnesium ion Chloride ion Beryllium ion 8. Give the formal charge for each of the noted atoms in the following Lewis structure. 9. Consider the compounds HBr‚ H2‚ and KBr. List the type of bonding of each. Show your calculation. 10. Draw the Lewis structure for the
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to determine unknown ions present in chemical samples by observing and analyzing results from various reactions of the sample with chemicals. Qualitative analysis is done through a series of steps. It is usually divided into two parts‚ namely: the preliminary and confirmatory tests. Preliminary tests are done to eliminate ion choices‚ while confirmatory tests are done to confirm the actual ions present in the sample. Qualitative analysis was done to identify the ions present in a given unknown
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____Ne 3s1______________________________________________ K _______Ar 4s1___________________________________________ Rb _______Kr 5s1___________________________________________ 2. Write the electron configuration for strontium and the strontium(II) ion. Sr ___________ 1s2 2s2p6 3s2p6d10 4s2p6 5s2 ______________ Sr2+ ______________ 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 ____________________ 3. Name the colors in visible light‚ beginning with that of highest energy (shortest wavelength). Red
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determining solubility‚ measuring acidity and basicity. Pre-Lab Discussion A salt is an ionic compound containing positive ions other than H+ and negative ions other than OH-. Most salts will dissociate to some degree when placed in water. In many cases‚ ions from the salt will react with water molecules to produce hydronium ions (H3O+) or hydroxide ions. Any chemical reaction in which water is one of the reactants is called a hydrolysis reaction. Salts are generally formed from the
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with the molecular formula C6H8O7‚ which means a molecule of the acid contains six carbon atoms‚ eight hydrogen atoms‚ and seven oxygen atoms. When it is dissolved in water‚ it partially ionizes to yield three H+ ions (hydrogen atoms which are missing their electron) and a C6H5O7(3-) ion (the 3- means that it has three extra electrons.) The resulting solution is called an "electrolyte." Chemical Reaction When two dissimilar metals are put in an electrolyte‚ a chemical reaction called "oxidation-reduction"
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chloride ion on its rate of diffusion in agar means it will diffuse faster because it is more concentrated. We graphed the diffusion of chloride ions rather than sodium ions because while the sodium ions do diffuse in to the agar the chloride ions from the NaCl will combine with silver ions‚ from AgNO3 and create a white precipitate. The white precipitate allows us to measure the the white band through the agar at different points and determine the rate of diffusion of the chloride ions. If the
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Honors Chemistry Final Exam Study Guide Multiple Choice- (51 points @ 1/2 point ea.) Identify the letter of the choice that best completes the statement or answers the question. ____ 1. The pair of elements that forms a bond with the least ionic character is |a. |Na and Cl. |c. |O and Cl. | |b. |K and Cl. |d. |Mg and Cl.
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of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions (Larsen‚ 2010). Element that have a positive ion are able to bond with elements with negative ions. This is because the elements share the electrons so that the ionization becomes neutral and both atoms become stable. Materials: 1. Cards with elements and positive or negative ions. 2. Reference Tables for Physical Setting/CHEMISTRY 2011 Edition: Periodic Table of the Elements 3. Bond
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