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- Balance the following equations. (Use the smallest whole numbers possible. Enter 1 where appropriate - do not leave any answer box blank.) (a) CAH100() + ]O2(@) → CO,(g) + H20() (b) CH4(g) + |a,(g) → CCI,(1) + HCI(g) (c) Fe(OH)2(s) + H2S(g) - Fe S3(s) + H20(g)formation to answer the next question. The conversion of nitrogen to ammonia, an essential process in the nitrogen cycle, occurs only in the presence of an iron-molybdenum cofactor. The concentration of molybdenum in one such co-factor was determined by titration with an acidified permanganate solution. The titration reaction equation is 4H* (aq) + 3MnO2 (aq) + 5Mo³+ (aq) → 3Mn²+ (aq) + 5M002+ (aq) + 2H₂O(1) A 30 mL sample of Mo3+ (aq) required 21.8 mL of 0.10 mol/L permanganate solution to reach a light pink end point. From the titration data, the concentration of Mo3+ (aq) is determined to be Record your answer to 2 sig-digs; do not include units. mol/L.The following chemical reaction takes place in aqueous solution: 2 AGNO3(aq)+K,CO;(aq) → Ag,CO;(s)+2 KNO3(aq) Write the net ionic equation for this reaction.
- Given the reaction : 6KOH(aq) + Fe2(SO4 )3(aq)→ 2Fe(OH)3(s)+ 3K2SO4(aq) (14 pts) (a)Write the balanced complete ionic equation for the reaction (b)Write the balanced netionic equation for the reactionIdentify the reactant that gets oxidized in the following reaction 5C2O4^2- (aq)+ 2MnO4^-(aq)+16H+(aq)---> 2Mn^2+(aq) +8H2O(l) +10CO2(g)How many moles of Mg3P2(s) can be produced from the reaction of 0.14 mol Mg(s) with 0.020 mol P4(s)? 6 Mg(s) + P4(s) → 2 Mg3P₂(s) O 0.047 mol O 0.14 mol O 0.020 mol O 0.42 mol O 0.040 mol
- Be sure to answer all parts. Consider the following balanced redox reaction (do not include state of matter in your answers): 2CrO₂ (aq) + 2H₂O()+6C10 (aq) → 2CrO42 (aq) + 3Cl₂(g) + 40H (aq) (a) Which species is being oxidized? (b) Which species is being reduced? (c) Which species is the oxidizing agent? (d) Which species is the reducing agent? (e) From which species to which does electron transfer occur? Electrons transfer from to(a) A student carries out a titration to find the concentration of some sulfuric acid. The student finds that 25.00 cm of 0.0880 mol dm aqueous sodium hydroxide, NaOH, is neutralised by 17.60 cm of dilute sulfuric acid, H2SO4. -3 H2SO4(aq) + 2NaOH(aq) → Na2SO,(aq) + 2H2O(1) (i) Calculate the amount, in moles, of NaOH used. answer = mol (ii) Determine the amount, in moles, of H2SO4 used. answer mol (ii) Calculate the concentration, in mol dm3, of the sulfuric acid. answer = mol dm3 (b) After carrying out the titration in (a), the student left the resulting solution to crystallise. White crystals were formed, with a formula of Na2SO4•x H2O and a molar mass of 322.1 g mol. What term is given to the x H2O' part of the formula? Using the molar mass of the crystals, calculate the value of x. answer =In an electrolysis of a solution with sodium chloride NaCl(aq), sodium hydroxide is formed NaOH(aq), chlorine gas Cl2(g), and hydrogen gas H2(g), after the reaction equation: 2NaCl(aq) + 2H2O(l) → 2NaOH(aq) + Cl2 (g) + H2(g) a) An electrolysis is a redox reaction. What substance is oxidized, and what substance is reduced in the electrolysis of the solution with sodium chloride NaCl(aq)? Base your answer by showing to change in oxidation figures. b) Use the table at the back of the task set and set up two half-reactions describing what is happening on the anode and cathode of this electrolysis.
- The fertilizer ammonium sulfate, (NH4)2SO4, is prepared by the rxn of ammonia with sulfuric acid. Compile the balanced molecular chemical eqn of this reaction: This reaction type is: A Combination B single displacement C Double displacement D oxidation-reductionThe following chemical reaction takes place in aqueous solution: FeCl3 (aq) + 3KOH (aq) → FeOH3 (s) + 3KCl (aq)Write the net ionic equation for this reaction.Chemists working with fluorine and its compounds some- times find it helpful to think in terms of acid-base reac- tions in which the fluoride ion (F¯) is donated and ассеpted. (a) Would the acid in this system be the fluoride donor or fluoride acceptor? (b) Identify the acid and base in each of these reactions: CIF;O2 + BF; CIF,O, · BF, -- TiF, + 2 KF – K2[TiF,]