Identify which of the following is a redox reaction. Select the correct answer below: O Mg...
QUESTION 17 Which of the following are redox reactions (select all that apply)? Mg + Cl2 - MgCl2 O H2+02-H20 u C3H6+02- CO2 + H20 UKCI + Ca(NO3)2 – KNO3 +CaCl2 QUESTION 18 Which element is being OXIDIZED in the following reaction? 4HCI + O2-2012 + 2H20 Hydrogen O Chlorine Oxygen O None of the above
In a redox reaction, reduction is defined by the: Select the correct answer below: O gain of electrons, resulting in an increased oxidation number loss of electrons, resulting in a decreased oxidation number. gain of electrons, resulting in a decreased oxidation number. O loss of electrons, resulting in an increased oxidation number.
QUESTION 11 1 POINT Which is a neutralization reaction? Select the correct answer below: OHNO3(aq) + KOH(aq) KNO3 (aq) + H2O(1) Cl,(aq) + H,O() HCI (aq)+ OH (aq) Ca2 (aq) + 2 Cl (aq) CaCl, (aq) HCl(aq) + H2O(l) H,O' (aq) +Cl (aq) FEE
Which of the following are redox reactions? (select all that apply) S8 + O2 → SO3 NaBr + CaF2 → NaF + CaBr2 C3H6 + O2 → CO2 + H2O Mg + Cl2 → MgCl2
What is the Lewis symbol for As3-? Select the correct answer below: 3- :As 3- As 3- :As: o •As What is the formula of the compound phosphorus trifluoride? Note: Don't bother with subscripts, you'll be graded on a plain text answer and also given the correctly subscripted answer in the feedback. For example, if the given compound was "water", you should enter H20 and the feedback will show you H20. For the reaction MgCl2 + 2 KOH Mg(OH)2 (s)...
Which of the following is a redox reaction? More than one answer may be correct. HBr(aq) + KOH(aq) → H20(1) + KBr(aq) SO3(g) + H20(1) - H2SO4(aq) HBr(aq) + Na2S(aq) - NaBr(aq) + H2S(g) NH4+(aq) + 2O2(g) H2O(l) + NO3(aq) + 2 H+(aq) 2 Na(s) + Cl2(g) → 2 NaCl(s) None of the above are redox reactions.
Balance the following redox reaction in acidic solution by inputting the correct coefficients If H or H20 is not present as reactant or product, select "O" as the coefficient for the purposes of this question. You must also explicitly label a coefficient as "1" if only one molecule is present. Important: You MUST simplify all "like terms" on both sides of the chemical equation before selecting your answer: having the same compound on both sides of the equation will be...
QUESTION 1 Consider the following chemical reaction: Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) Which of the following changes will increase the rate of this reaction? Decreasing the concentration of HCI. O Adding more MgCl2. O Increasing the pressure of H2. Decreasing the temperature. Adding a catalyst. N QUESTION 2
Question Cell notation will list each half-reaction with stoichiometry: Select the correct answer below: -identical to the balanced overall redox reaction -equal to 12 of the balanced overall redox reaction -corresponding to the most reduced form of each half-reaction -none of the above
which is correct Which of the following is NOT true about redox reactions? Select one or more: I a. Redox reaction is a chemical reaction where electrons are transferred from one electron to the other. b. Lose electrons are oxidized to form hydrogen peroxide. c. Molecules that can donate electrons are called "reducing agents": d. Molecules lose electrons after the reaction is reduced