3. What does the sum of oxidation numbers need to equal for a charged compound? The charge on the compound Zero The largest oxidation number The smallest oxidation number GET IT NOW New version available! (3.0.220)
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- A.) What is the balanced ionic reaction for the standardization reaction of C2O42- and MnO4-? B.) How many moles of KMnO4 would we need to neutralize C2O4-?A railroad tank car carrying 1.5 103 L of concentrated sulfuric acid derails and spills its load. The acid is 93.2% H2SO4 by mass and has a density of 1.84 g/mL. How many kilograms of sodium carbonate (soda ash) are needed to neutralize the acid? (Hint: What is the neutralization reaction?)Aqueous solutions of ammonia 1NH32 and bleach (active ingredient NaOCl) are sold as cleaning fluids, but bottles of both of them warn: “Never mix ammonia and bleach, as toxic gases may be produced.” One of the toxic gases that can be produced is chloroamine, NH2Cl.What is the oxidation number of chlorine in chloramine?
- When the following equation is balanced properly under acidic conditions, what are the coefficients of the species shown?NO + CrO42- = NO3- + Cr3+Water appears in the balanced equation as a reactant, product, or neither, with what coefficient?Which element is oxidized?A 100.26ml of KMnO₄ will oxidize that weight of KHC₂H₄·H₂O which requires 43.32ml of 0.3010N of NaOH for neutralization. What is the mass of KHC₂H₄·H₂O to be oxidize by KMnO₄? What is the value of each millimeter of the KMnO₄ in terms of grams of Mn by Volhard method (3Mn⁺⁺+ 2MnO₄⁻ + 4OH⁻ --> 5MnO₂ +2H₂O)? What is the value of each millimeter of the KMnO₄ in terms of grams As₂O₃? What is the normality of KMnO₄?Calculate the oxidation number of the underlined element. a) HClO4 b) CH4 c) PO4 3- Consider the photosynthesis reaction: CO2 + H2O → CH2O + O2 Change in O.N. for oxygen: ????
- The reaction between potassium permanganate and sulfur dioxide in acid solution is as follows: MnO4- + SO2 + H2O -> Mn2+ + H+ +SO4 -2 (a) If 45.00 mL of 0.04000 M KMNO4 is treated with SO2, how many milliliters of 0.100 N NAOH is required to neutralize the acid formed? The excess SO2 is removed by boiling.Sodium bicarbonate is often used as an antacid to neutralizeexcess hydrochloric acid in an upset stomach. Howmuch hydrochloric acid in grams can be neutralized by3.5 g of sodium bicarbonate? (Hint: Begin by writing a balancedequation for the reaction between aqueous sodiumbicarbonate and aqueous hydrochloric acid.)Farmers use ammonium sulfate as a fertilizer. In the soil, ni-trifying bacteria oxidize NH4+to NO3-, a groundwater contam-inant that causes methemoglobinemia (“blue baby” syndrome).The World Health Organization standard for maximum [NO3-]in groundwater is 45 mg/L. A farmer adds 210. kg of (NH4)2SO4 to a field and 37% is oxidized to NO3-. What is the groundwa-ter [NO3-] (in mg/L) if 1000. m3of the water is contaminated?
- 2,4-Dichlorophenoxyacetic acid ("2,4-D") is a widely used herbicide with the molecular formula C8H6Cl2O3C8H6Cl2O3. The pKapKa of 2,4-D is 2.73. A certain water-based herbicide product contains 130 gL−1gL−1 of 2,4-D. What is the pHpH of the 2,4-D solution?A PB tablet containing 425 mg of BSS is combined with HCl. The solution is filtered, transferred to a 50-mL volumetric flask, and diluted with water. What is the molarity of Bi3+ in the resulting solution? answer is 0.0235 MWhat is the oxidizing agent in the following reaction? Cr2O72−(aq) + 6 S2O32−(aq) + 14 H+(aq) → 2 Cr3+(aq) + 3 S4O62−(aq) + 7 H2O(ℓ) Group of answer choices Cr2O72− S2O32− H+ Cr3+ S4O62−