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Hydrobromic acid and ammonia net ionic equation

21/12/2020 Client: saad24vbs Deadline: 2 Day

1-Consider the reaction when aqueous solutions of magnesium sulfate and manganese (II) nitrate are combined. The net ionic equation for this reaction is:


2-Consider the reaction when aqueous solutions of lead nitrate and aluminum sulfate are combined. The net ionic equation for this reaction is:


3-Consider the reaction when aqueous solutions of ammonium phosphate and sodium iodide are combined. The net ionic equation for this reaction is:


4-Consider the reaction when aqueous solutions of magnesium bromide and potassium phosphate are combined. The net ionic equation for this reaction is:


5-Consider the reaction when aqueous solutions of ammonium sulfide and magnesium sulfate are combined. The net ionic equation for this reaction is:


6-Consider the reaction when aqueous solutions of potassium nitrate and barium sulfide are combined. The net ionic equation for this reaction is:


7-Consider the reaction when aqueous solutions of sodium sulfide and potassium nitrate are combined. The net ionic equation for this reaction is:


8-Consider the reaction when aqueous solutions of ammonium phosphate and potassium nitrate are combined. The net ionic equation for this reaction is:


9-Consider the reaction when aqueous solutions of iron(III) nitrate and copper(II) sulfate are combined. The net ionic equation for this reaction is:


10-How many mL of 0.406 M HI are needed to dissolve 5.97 g of CaCO3? 2HI(aq) + CaCO3(s) image1.png CaI2(aq) + H2O(l) + CO2(g) image2.wmf


 mL


11-A 0.5488 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated asAgCl by the addition of an excess of silver nitrate. The mass of the resulting AgCl is found to be 1.1541 g. What is the mass percentage of chlorine in the original compound? image3.wmf


 %


12-A student determines the aluminum content of a solution by first precipitating it as aluminum hydroxide, and then decomposing the hydroxide to aluminum oxide by heating. How many grams of aluminum oxide should the student obtain if her solution contains 51.0 mL of 0.583 M aluminum nitrate?


image4.wmf


 g


13-Write a net ionic equation to show that hydrobromic acid, HBr, behaves as an acid in water.


14-Write a net ionic equation to show why solid potassium hydroxide, KOH (s), forms a basic solution when it dissolves in water.


15-The substance ethylamine is a weak nitrogenous base like ammonia. Write a net ionic equation to show how ethylamine, C2H5NH2, behaves as a base in water.


16-Write a net ionic equation for the reaction that occurs when aqueous solutions of sodium hydroxide and hydrobromic acid are combined.


17-Write a net ionic equation for the reaction that occurs when aqueous solutions of potassium hydroxide andhypochlorous acid are combined.


18-Write a net ionic equation for the reaction that occurs when aqueous solutions of ammonia and acetic acid are combined


19-Write a net ionic equation for the reaction that occurs when aqueous solutions of hydrobromic acid and ammonia are combined


20-Write a net ionic equation for the reaction that occurs when excess hydriodic acid (aq) and lead(II) carbonate are combined.


21-Write a net ionic equation for the reaction that occurs when ammonium sulfide and excess hydriodic acid (aq) are combined.


22-What volume of a 0.138 M perchloric acid solution is required to neutralize 24.9 mL of a 0.196 M calcium hydroxidesolution? image5.wmf


 mL perchloric acid


23-What volume of a 0.174 M potassium hydroxide solution is required to neutralize 28.3 mL of a 0.310 M hydrobromic acid solution? image6.wmf


mL potassium hydroxide


24-An aqueous solution of calcium hydroxide is standardized by titration with a 0.196 M solution of perchloric acid. If 24.9 mL of base are required to neutralize 12.6 mL of the acid, what is the molarity of the calcium hydroxide solution? image7.wmf


M calcium hydroxide


25-An aqueous solution of potassium hydroxide is standardized by titration with a 0.174 M solution of hydrobromic acid. If 28.3 mL of base are required to neutralize 24.0 mL of the acid, what is the molarity of the potassium hydroxidesolution? image8.wmf


M potassium hydroxide


26-A 14.0 g sample of an aqueous solution of perchloric acid contains an unknown amount of the acid. If 29.2 mL of 0.946 M sodium hydroxide are required to neutralize the perchloric acid, what is the percent by weight ofperchloric acid in the mixture? image9.wmf


 % by weight


27-A 9.00 g sample of an aqueous solution of hydrobromic acid contains an unknown amount of the acid. If 24.9 mL of 1.17 M sodium hydroxide are required to neutralize the hydrobromic acid, what is the percent by weight of hydrobromic acid in the mixture? image10.wmf


 % by weight


28-Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to standardize strong base solutions. It has the unwieldy formula of KHC8H4O4. This is often written in shorthand notation as KHP. How many grams of KHP are needed to exactly neutralize 25.6 mL of a 0.537 M potassium hydroxide solution ? image11.wmf


 grams KHC8H4O4


29-Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to standardize strong base solutions. It has the unwieldy formula of KHC8H4O4. This is often written in shorthand notation as KHP. What volume of a 0.437 M potassium hydroxide solution is needed to exactly neutralize 2.76 grams of KHP ? ANSWER: image12.wmf


 mL potassium hydroxide


30-


image13.png



The oxidation number of an element is the "charge" the element would have if all of its bonds were completely ionic; that is, if the electron pairs of each bond were transferred to the more electronegative atom. For monatomic ions the oxidation number is simply the charge of the ion. For covalently bonded elements the oxidation number is a bookkeeping device and does not mean that the element carries an actual charge. Determine the oxidation state for each of the elements below.



The oxidation state of


...


nitrogen


...


in


...


nitrite ion NO2-


...


is


...


image14.wmf


 .



The oxidation state of



xenon



in



xenon gas Xe



is



image15.wmf


 .



The oxidation state of



bromine



in



bromate ion BrO3-



is



image16.wmf


 .



31-


image17.png



Use the rules (in order) to assign oxidation numbers to each of the elements in the compounds below.



boric acid


H


B


O


H3BO3


image18.wmf



image19.wmf



image20.wmf




hypochlorite ion


Cl


O



ClO-


image21.wmf



image22.wmf





periodic acid


H


I


O


HIO4


image23.wmf



image24.wmf



image25.wmf



32-


N2 + 4Fe(OH)2+ 4H2Oimage26.png4Fe(OH)3 + N2H4


In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent.


name of the element oxidized:


image27.wmf




name of the element reduced:


image28.wmf




formula of the oxidizing agent:


image29.wmf


formula of the reducing agent:


image30.wmf


33-


Mn(OH)2 + HPbO2-image31.pngPb + MnO2+ H2O+ OH-


In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent.


name of the element oxidized:


image32.wmf




name of the element reduced:


image33.wmf




formula of the oxidizing agent:


image34.wmf


formula of the reducing agent:


image35.wmf


34-A student is asked to standardize a solution of potassium hydroxide. He weighs out 1.02 g potassium hydrogen phthalate (KHC8H4O4, treat this as a monoprotic acid). It requires 36.9 mL of potassium hydroxide to reach the endpoint. A. What is the molarity of the potassium hydroxide solution? image36.wmf


 M This potassium hydroxide solution is then used to titrate an unknown solution of hydrochloric acid. B. If 23.4 mL of the potassium hydroxide solution is required to neutralize 27.6 mL of hydrochloric acid, what is the molarity of the hydrochloric acid solution? image37.wmf


 M


35-A student is asked to standardize a solution of sodium hydroxide. He weighs out 1.02 g potassium hydrogen phthalate (KHC8H4O4, treat this as a monoprotic acid). It requires 31.9 mL of sodium hydroxide to reach the endpoint. A. What is the molarity of the sodium hydroxide solution? image38.wmf


 M This sodium hydroxide solution is then used to titrate an unknown solution of nitric acid. B. If 18.0 mL of the sodium hydroxide solution is required to neutralize 15.0 mL of nitric acid, what is the molarity of the nitric acid solution? image39.wmf


 M


36-Consider the reaction when aqueous solutions of copper(II) bromide and silver acetate are combined. The net ionic equation for this reaction is:


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