What is the safest way to provide S2- ions in a chemical reaction? React a metal salt with thiourea to produce a metal sulfide compound.   None of these choices are safer than the others   Purchase sodium sulfide from a chemical company and store the compound in the lab to use in the experiment.   Purchase FeS2 and react it with water to produce sulfide ions

Q: Consider the precipitation reactions below: Fe2* + S? → Fes Cu2+ + S? →Cus Zn2* + S² → ZnS Calculate…

A: The standard free energy of a reaction is the difference of Gibbs free energy of formation of…

Q: 1. Which of the following is the ratio of magnesium ions to sulfite ions when silver sulfite is in…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: reactions involved in the complete oxidation of cobaltous ion

A: In this question we have to explain two reactions involved in the complete oxidation of cobaltous…

Q: 1. When 1.164 g of a certain metal sulfide was roasted in air, 0.972 g of the metal oxide was…

A: #Q.1: Both sulfide(S2-) and oxide(O2-) have same charge of -2. The charge on the unknown metal(M) is…

Q: 4. The redox reaction between KMNO4 and Na C2O4 is shown in equation 1 of the Introduction. A…

A: Given,  Volume of Na2C2O4 = 25.0 mL  Normality of Na2C2O4 = 0.75 N Volume of KMnO4 = 14.8 mL…

Q: Vanadium could be oxidized to vanadium (II) ions thru the action of zinc powder and an acid True or…

A: Oxidation is a process that involves  loss of electrons and reduction is a process that involve gain…

Q: For each reaction, predict the products and write a balanced chemical equation. Fluorine gas was…

A: Solution- (a).Fluorine gas was passed over pure barium metal- F2 + Ba           →        BaF2   (b).…

Q: Observe the physical properties of the metals. Examine each for its state, color, luster and…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Determine the oxidation number for each of the transition metal atoms or ions. a.) [ V(OH2)6 ](NO3)a…

A: Applying definition of coordination no. i.e. no.of co-ordination bonds is equal to coordination…

Q: Indicate the oxidation number of the metal for Na2[CdBr4]

A: Given compoundNa2[CdBr4]Oxidation state of Metal = To be determined

Q: Which ion can be most easily reduced? O a. Zn2+ O b. Ca2+ O c. Cu2+ O d. Fe2+

A:

Q: Of the following two choices which reaction has the greater potential to occur? Select one: a.…

A: The greater the negative electrode reduction potential gives you the idea about the tendency to lose…

Q: 3. What is the oxidation number of any element in the free or uncombined state? a. 0 c. -1 b. +1 d.…

A: Oxidation number (O.N), is hypothetical charge of an atom if all of its bonds to different atoms…

Q: Determine the oxidation number of each of the transition metal atoms or ions (1) K4 [Mn (CN)6] (2)…

A: Oxidation  number is a number assigned to element in chemical  combination which represents  the…

Q: 4. Write the valence electron configuration and the oxidation states for: a. 38 Sr b. 51 Sb

A: here i have mentioned electronic configurations

Q: Le Chatelier's Principle in Iron Thiocyanate Equilibrium QUESTIONS 1. Write the equilibrium constant…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: 1.Which of the following transition elements does not have a maximum oxidation number similar to…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What is the oxidation number of chromium in sodium dichromate, Na 2Cr 2O 7?     +6     +7     +12…

A: oxidation number is the total number of electrons gain and lost by the atom in order to form the…

Q: Divalent manganese reacts with oxygen according to the following chemical reaction: Mn2 +1/2 O2 (9 +…

A:

Q: In which of the following compounds is sulfur in a positive oxidation state?     MnS     S8…

A: A multiple choice question based on oxidation state, which is to be accomplished.

Q: Write a balanced equation for the reaction between nitrous acid and copper (II) hydroxide. O HNO3 +…

A:

Q: Question 3 Considering the cation/anion ratio in each compound, which one has the lowest boiling…

A:

Q: Which of the following statements is TRUE?   a. Less active metals have greater tendencies to form…

A: Most active metals are s-block element's. And less active metals are gold , silver , platinum.

Q: Calculate the molar concentration of EDTA since 42.35 mL of EDTA is consumed in the titration.…

A: The complex formation reaction between Mg^2+ and EDTA solution is  Mg^2+ + EDTA = [Mg-EDTA]^2+  So,…

Q: why is the sulfide and the ferricyanide ions must not be mixed?

A: Given : why is the sulfide and the ferricyanide ions must not be mixed?

Q: Jonathan and his friends wish to determine iron content in an unknown sample. They have decided to…

A: The E° values give for the half reactions are their reduction potentials. The half reaction with a…

Q: 3. What is the oxidation number of any element in the free or uncombined state? a. 0 C. -1 b. +1 d.…

A: Oxidation number is the charge which an atom of the element has in it's ion or appears to have when…

Q: write the balanced equation for Lead (II) Nitrate & Ammonium Acetate. What is the white precipitate…

A: The reactants given are   Lead (II) Nitrate = Pb(NO3)2  Ammonium Acetate = CH3COONH4

Q: Some quantity of metallic iron was dissolved in sulfuric acid, and then Titrated by 17,15 mL KMnO4…

A: Metallic iron dissolved in sulfuric acid in terms of FeSO4 Then by Titration with KMnO4, FeSO4…

Q: Write the net balanced equation for the reaction of ferrocene and (NH4)2Ce(NO3)6. What is the role…

A: Ferrocene is an organometallic compound consisting of 2 cyclopentadienyl rings bound to a central…

Q: Identify the phase of the copper product after each reaction in the copper cycle. The heating of…

A: The phase of the formed copper product in the given four reactions are shown as follows:

Q: 15. What are the products of the reaction between aqueous copper (II) ions and solid cobalt metal?…

A:

Q: Which statement is TRUE about the reaction? I. Fe is oxidized while O2 is reduced. II. Fe is reduced…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Which of the following is correctly paired in the reduction of Cu2+ to Cu(s)?   a. Zn-oxidizing…

A: The correct answer is given below

Q: 20. An excess of AgNO3 reacts with 185.5mL of an AlCl3 solution to give 0.325 gof AgCl. What is the…

A: Volume of solution (V) = 185.5 mL Mass of AgCl = 0.325 g

Q: Which of these sources of CO2 cannot be removed from making cement even when using renewable energy?…

A: CO2 emission from cement industry is one of significant source of CO2 which lead to green house…

Q: What is the ionophore that selectively traps hydrogen ions in the pH electrode?     Sodium Ion…

A: The pH electrode is an example of a glass electrode that is sensitive to hydrogen ions. Glass…

Q: what is the equilibrium reaction involved in the process Sulfuric Acid Production using the Contact…

A: Contact process is the industrial preparation process of sulfuric acid.Four different steps are…

Q: The salts or hydroxides of transition metals react with diols under basic conditions to form…

A: In coordination chemistry, ligands are molecules that have one or more atoms which can act as Lewis…

Q: Make an Introduction about the reaction of Al + CuSO4 | Aluminum + Copper (II) Sulfate

A: Al + CuSO4----->

Q: What is the oxidation number on the element X   in the compound H2XO4? a) +3 b) +6 c) +2 d) +4

A:

Q: Balance the equation for the following reaction under acidic aqueous conditions. Fe2+ + Cr20,2- →…

A: Balance equation: 6Fe2+  +  Cr2O72- + 14H+ → 6Fe3+  + 2Cr3+  + 7H2O Correct answer is (d) 6.

Q: Give the product for the following reaction utilizing double displacement reactions. The solids that…

A:

Q: In a metal plating plant , the waste contains 20 mg/L Cu 2+. It was decided that no precipitation…

A: Sparingly soluble salts are those which are not completely soluble in aqueous solution, rather there…

Q: This method requires acidic conditions to prevent iron from precipitating out as ferric hydroxide…

A: answer = Volhard method use to prevent iron from precipitating out as ferric hydroxide

Q: A test for completeness of the reduction of copper(II) ions to metallic copper can be done via the…

A: The metal which has a more negative standard reduction potential value acts as a reducing agent.

Q: Using Le Châtelier's principle, explain what happens if Fe3+(aq) ions are added to the following…

A: Le chatelier principle :  It states that when in a given equilibrium ,any type of disturbance occurs…

Q: 2. Why is the sulfide and the ferricyanide ions must not be mixed?

A: Interpretation - To explain sulfide and the ferricyanide ions must not be mixed.

Q: a) KMNO4 b) SrSO3 с) Fe(NO;)з d) Caз(РO-)2 e) РЬС, f) H2O2

A: Note: Since you have posted a question with multiple subparts, we will solve the first three…