Homework Answers
Solution:
Q2, a to i: As below,
Q 3:
Le Chatelier's principle
It is an observation about chemical equilibria of reactions. It states that changes in the temperature, pressure, volume, or concentration of a system will result in predictable and opposing changes in the system in order to achieve a new equilibrium state.
At higher pH the concentration of copper sulfide precipitation formation equilibrium would be reversed in the opposite direction based upon the Le Chatelier's principle.
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Please help me! Thank you so much! 2. Give chemical equations for the following: a. Precipitating the silver ion b...
2. Give chemical equations for the following: a. Precipitating the silver ion by adding hydrochloric acid...
2. Give chemical equations for the following: a. Precipitating the silver ion by adding hydrochloric acid b. Precipitating the copper ion by adding sodium sulfide c. Dissolving the copper sulfide in concentrated nitric acid to precipitate sulfur. (The orange gas that you saw is NO, product, and sulfur precipitate can be shown as “S”) Laboratory 10 | Qualitative Analysis of a mixture of lons 11 Confirming the identity of the ion as copper by adding potassium ferricyanide. (Potassium is only...
Oxalate ion will interfere with the Group D tests after we make the solution acidic. Also,...
Oxalate ion will interfere with the Group D tests after we make the solution acidic. Also, ammonium ion may prevent the precipitation of Group Dcations as hydroxides in sodium hydroxide solution. Thus, must treat the supernatant liquid left after we have precipitated calcium oxalate, in order to destroy any remaining Oxalate or ammonium ions prior to further analysis. To accomplish this, we transfer the solution to a crucible, add concentrated nitric acid and heat the mixture to dryness in a...
please help me out answering thsese comp,etely and corrctly. thanks. lab Write balanced chemical equations for...
please help me out answering thsese comp,etely and corrctly.
thanks.
lab Write balanced chemical equations for the following chemical reactions. NOTE: some of may already be balanced · Lehium metal and water react to produce lithium hydroxide and hydrogen gas. 2. When solutions of silver nitrate and potassium bromide are combined, solid silver bromide 3. Suilturic acid is produced when sulfur trioxide reacts with water. HINT: Sulfturic acid is Me reaction of iron metal with steam produces an iron compound....
Chemical Reactions For each reaction you observed, the names of the reactants and products are given...
Chemical Reactions For each reaction you observed, the names of the reactants and products are given below. You must: 1. Write the correct formula for each reactant and product. Balance each equation. 2. A. Combination reactions magnesium oxide 1. Magnesium + oxygen (unbalanced) Mg+ O, MgO sulfur dioxide 2. Sulfur + oxygen B. Analysis of the Copper Content of a Penny po zinc chloride + hydrogen zinc + hydrochloric acid HCI ZnCl, 1. (unbalanced) н, Zn + C. Single Replacement...
woukd you please solve the equations only for me ?! thank you ? PART 1: RECORD...
woukd you please solve the equations only for me ?! thank you
?
PART 1: RECORD ALL OBSERVATIONS. TE EACH EQUATION. ALL REACTIONS MUST BE BALANCED AND INCLUDE ALL PHASES OF MATTER. Combination Reactions: 1. magnesium metal + oxygen change Equation: Mg(s) + O2(g) --> Mg(s) 2. iron metal + sulfur change_mixed witherimante Black Compoundſ pecue pitate), Yellow budur. Hool Equation: Fe(s) + S(s) -> Fe,$3/s) 3. ammonia + hydrochloric acid change Equation: NH3(g) + HCl(g) -> NH Cl(s) 4....
Why wouldnt a weak base, such as NH3, work just as well as KOH in (1)?...
Why wouldnt a weak base, such as NH3, work just as well as KOH
in (1)?
2.2 Is the question I have. I figured out
2.1 already.
Below is relevant info. Thanks!
2. (1) Describe how adding a solution of KOH to the original sulfide precipitate results in the separa- tion of Sn4+ ion from the other Group W cations. (2) Why wouldn't a weak base, such as aque- ous NH3, work just as well as aqueous KOH in (1)?...
Please help with solving Question 1 (A-C) Thank you! Unless otherwise specified in the problem, you...
Please help with solving Question 1 (A-C) Thank you!
Unless otherwise specified in the problem, you may assume that all solutions are at 25°C. 1. 50.0 mL of a pH 6.00 carbonic acid buffer is titrated with 0.2857 M NaOH, requiring 17.47 mL to reach the second equivalence point. a. Calculate the molarity of carbonic acid and bicarbonate in the original buffer. Carbonic acid: Bicarbonate: b. Calculate the pH of the solution after a total of 100.0 mL of 0.2857...
please solve what you can and show your work. I'm not really good in chemistry??♀️ Home...
please solve what you can and show your work. I'm not really
good in chemistry??♀️
Home assignment: Chapter 4: Aqueous Reactions and Solution Stoichiometry 1) Of the species below, only is not an electrolyte. A) HCI B) Rb2804 C) Ar D) KOH E) NaCI 2) Aqueous potassium chloride will react with which one of the following in an exchange (metathesis) reaction? A) calcium nitrate B) sodium bromide C) lead nitrate D) barium nitrate E) sodium chloride 3) When aqueous solutions...
PartA: Penny-→ Cu2+(aq) Make sure it is dated prior to 1982. Record mass to nearest 0.001 I. Weig...
PartA: Penny-→ Cu2+(aq) Make sure it is dated prior to 1982. Record mass to nearest 0.001 I. Weigh a copper penny. grams. 2. Place 450 mL of distilled water in a clean 600-mL beaker. Place the beaker on a hotplate and heat until the water boils. Do not wait for the water to boil now, but proceed with the rest of the experiment. You will need this water for rinsing in step C3. CAUTION. You will generate poison°แs nitrogen dioxide...
Hi, can anyone please help me with this? i have no clue how to define if...
Hi,
can anyone please help me with this? i have no clue how to define
if a reaction is Oxidation reduction or not. Thanks a lot
OXIDATION-REDUCTION Introduction Chemists refer to reactions which involve a transfer of electrons from one reactant to another as oxidation reduction reactions of just "redox" reactions. Oxidation is defined as a loss of electron and reduction as a gain of electron by a substance during a chemical reaction. The loss of electrons by one substance...
2. Give chemical equations for the following: a. Precipitating the silver ion by adding hydrochloric acid b. Precipitating the copper ion by adding sodium sulfide c. Dissolving the copper sulfide in concentrated nitric acid to precipitate sulfur. (The orange gas that you saw is NO, product, and sulfur precipitate can be shown as “S”) Laboratory 10 | Qualitative Analysis of a mixture of lons 11 Confirming the identity of the ion as copper by adding potassium ferricyanide. (Potassium is only...
Oxalate ion will interfere with the Group D tests after we make the solution acidic. Also, ammonium ion may prevent the precipitation of Group Dcations as hydroxides in sodium hydroxide solution. Thus, must treat the supernatant liquid left after we have precipitated calcium oxalate, in order to destroy any remaining Oxalate or ammonium ions prior to further analysis. To accomplish this, we transfer the solution to a crucible, add concentrated nitric acid and heat the mixture to dryness in a...
please help me out answering thsese comp,etely and corrctly.
thanks.
lab Write balanced chemical equations for the following chemical reactions. NOTE: some of may already be balanced · Lehium metal and water react to produce lithium hydroxide and hydrogen gas. 2. When solutions of silver nitrate and potassium bromide are combined, solid silver bromide 3. Suilturic acid is produced when sulfur trioxide reacts with water. HINT: Sulfturic acid is Me reaction of iron metal with steam produces an iron compound....
Chemical Reactions For each reaction you observed, the names of the reactants and products are given below. You must: 1. Write the correct formula for each reactant and product. Balance each equation. 2. A. Combination reactions magnesium oxide 1. Magnesium + oxygen (unbalanced) Mg+ O, MgO sulfur dioxide 2. Sulfur + oxygen B. Analysis of the Copper Content of a Penny po zinc chloride + hydrogen zinc + hydrochloric acid HCI ZnCl, 1. (unbalanced) н, Zn + C. Single Replacement...
woukd you please solve the equations only for me ?! thank you
?
PART 1: RECORD ALL OBSERVATIONS. TE EACH EQUATION. ALL REACTIONS MUST BE BALANCED AND INCLUDE ALL PHASES OF MATTER. Combination Reactions: 1. magnesium metal + oxygen change Equation: Mg(s) + O2(g) --> Mg(s) 2. iron metal + sulfur change_mixed witherimante Black Compoundſ pecue pitate), Yellow budur. Hool Equation: Fe(s) + S(s) -> Fe,$3/s) 3. ammonia + hydrochloric acid change Equation: NH3(g) + HCl(g) -> NH Cl(s) 4....
Why wouldnt a weak base, such as NH3, work just as well as KOH
in (1)?
2.2 Is the question I have. I figured out
2.1 already.
Below is relevant info. Thanks!
2. (1) Describe how adding a solution of KOH to the original sulfide precipitate results in the separa- tion of Sn4+ ion from the other Group W cations. (2) Why wouldn't a weak base, such as aque- ous NH3, work just as well as aqueous KOH in (1)?...
Please help with solving Question 1 (A-C) Thank you!
Unless otherwise specified in the problem, you may assume that all solutions are at 25°C. 1. 50.0 mL of a pH 6.00 carbonic acid buffer is titrated with 0.2857 M NaOH, requiring 17.47 mL to reach the second equivalence point. a. Calculate the molarity of carbonic acid and bicarbonate in the original buffer. Carbonic acid: Bicarbonate: b. Calculate the pH of the solution after a total of 100.0 mL of 0.2857...
please solve what you can and show your work. I'm not really
good in chemistry??♀️
Home assignment: Chapter 4: Aqueous Reactions and Solution Stoichiometry 1) Of the species below, only is not an electrolyte. A) HCI B) Rb2804 C) Ar D) KOH E) NaCI 2) Aqueous potassium chloride will react with which one of the following in an exchange (metathesis) reaction? A) calcium nitrate B) sodium bromide C) lead nitrate D) barium nitrate E) sodium chloride 3) When aqueous solutions...
PartA: Penny-→ Cu2+(aq) Make sure it is dated prior to 1982. Record mass to nearest 0.001 I. Weigh a copper penny. grams. 2. Place 450 mL of distilled water in a clean 600-mL beaker. Place the beaker on a hotplate and heat until the water boils. Do not wait for the water to boil now, but proceed with the rest of the experiment. You will need this water for rinsing in step C3. CAUTION. You will generate poison°แs nitrogen dioxide...
Hi,
can anyone please help me with this? i have no clue how to define
if a reaction is Oxidation reduction or not. Thanks a lot
OXIDATION-REDUCTION Introduction Chemists refer to reactions which involve a transfer of electrons from one reactant to another as oxidation reduction reactions of just "redox" reactions. Oxidation is defined as a loss of electron and reduction as a gain of electron by a substance during a chemical reaction. The loss of electrons by one substance...
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