Key Reactions quiz Loading... 1. Balance the equation for the reaction: ___ HCl(aq) + ___ MnO₂(s) → ___MnCl₂(aq) + ___H₂O(l) + ___ Cl₂(g)4 HCl(aq) + MnO₂(s) → MnCl₂(aq) + 2H₂O(l) + Cl₂(g)6 HCl(aq) + MnO₂(s) → MnCl₂(aq) + 2H₂O(l) + 2 Cl₂(g)2 HCl(aq) + MnO₂(s) → MnCl₂(aq) + H₂O(l) + Cl₂(g)4 HCl(aq) + 2 MnO₂(s) → 2 MnCl₂(aq) + 2H₂O(l) + Cl₂(g)Question 1 of 14 Loading... 2. What is the typical range of the pH scale?0-141-51-200-10Question 2 of 14 Loading... 3. State the formula for the lead (II) ionPb³⁻Pb²⁺Pb³⁺Pb²⁻Question 3 of 14 Loading... 4. In the test of a gas, a lit splint gives a squeaky pop. What is the gas?OxygenChlorineCarbon dioxideHydrogenQuestion 4 of 14 Loading... 5. Are metal oxides acidic or basic?AcidicDepends on conditionsNeutralBasicQuestion 5 of 14 Loading... 6. What is the universal indicator colour of a neutral solution?PurpleYellowGreenRedQuestion 6 of 14 Loading... 7. Describe the observations of the reaction of zinc and dilute hydrochloric acidfizzing, metal moves around, metal melts, metal disappears and metal floatsno reactionfizzing and metal disappearsfizzing, metal disappears, metal floats, lilac flame seenQuestion 7 of 14 Loading... 8. What is an acid?An acid is a compound that reacts with metalsAn acid is a corrosive substanceAn acid is a green solutionAn acid is a source of hydrogen ions, H⁺Question 8 of 14 Loading... 9. What is the formula for zinc carbonate?ZnCO₆Zn₃(CO₃)₂Zn(CO₃)₂ZnCO₃Question 9 of 14 Loading... 10. Can a base neutralise an acid?YesOnly if it is more reactive than hydrogenNoSometimesQuestion 10 of 14 Loading... 11. Name the compound formed when magnesium reacts with oxygenmagnesium dioxidemagnesium oxidemagnesium dioxatemagnesium oxateQuestion 11 of 14 Loading... 12. State the colour of phenolphthalein in acidic and alkaline solutionsacidic = red alkali = blueacidic = pink alkali = colourless acidic = colourless alkali = pinkacidic = blue alkali = red Question 12 of 14 Loading... 13. Is iron (III) hydroxide acidic or basic?Depends on the conditionsNeutral (as metal hydroxides are neutral)Acidic (as metal hydroxides are acidic)Basic (as metal hydroxides are basic)Question 13 of 14 Loading... 14. How can metal carbonates be used to produce carbon dioxide?Themal Decomposition: when metal carbonates are heated, they break down releasing carbon dioxide. Alternatively, the carbonate can be added to an acid.Reacting with more metal leaves the metal oxide, releasing carbon dioxideBurning them in air releases carbon dioxideReacting with acid releases carbon dioxideQuestion 14 of 14 Loading... Related Posts:The entire quiz question bank!The entire quiz question bank (Double only)!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizElectrolysis quiz Hydr0Gen2020-02-16T16:28:50+00:00Categories: Uncategorized|Tags: Quiz, Topic: Key Reactions| Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail