Properties of Acids and Bases Assignment and Bases 2023/2024 verified to pass

Properties of Acids and Bases Assignment and BasesConsider this reaction: KOH + HBR -> KBR + H2O Which is the acid in this reaction? - correct answer HBr Consider this reaction: KOH + HBR -> KBR + H2O Which is the base in this reaction? - correct answer KOH Consider this reaction: KOH + HBR -> KBR + H2O Which statement is most likely true about KOH? - correct answer It turns clear phenolphthalein pink. Consider this reaction: KOH + HBR -> KBR + H2O Which statement is most likely true about HBr? - correct answer It turns blue litmus red. A pool owner adds a compound containing chlorine to the pool to disinfect it. However, too much of the compound is added. As a result, the water becomes too acidic. What could the pool owner do to reduce the acidity of the pool? - correct answer He could add a base to the pool to neutralize the acid. Which is the best reason that a geologist might carry a small dropper bottle filled with hydrochloric acid when doing fieldwork? - correct answer to test for the presence of carbonate minerals in a rock A beaker contains a solution of calcium hydroxide (Ca(OH)2) in water. A student places a straw in the beaker and then breathes into the solution through the straw. As the student breathes into the solution, a white precipitate forms. What is the most likely composition of the precipitate? - correct answer CaCO3 During a lab experiment, students are supposed to add small pieces of magnesium, aluminum, and calcium metal to concentrated hydrochloric acid in a test tube. The laboratory instructions include strong safety warnings to make sure that no sparks, open flames, or high heat sources are present in the room when students perform this experiment. Which is the most likely reason for these warnings? - correct answer Hydrogen gas is highly flammable. Identify two acids and two bases that you use or come into contact with in an average week. Identify uses for each substance. - correct answer I use citric acid everyday when I eat foods with preservatives and citrus fruits. I use magnesium hydroxide everyday when I put on my deodorant. Which of these substances contributes to soap's slippery texture? - correct answer a base H2CO3 is used in soft drinks. What is the name of this compound? - correct answer carbonic acid Look at the reaction below. H2SO4(aq) + Mg(s) -> MgSO4(aq) + H2(g) Which substance is the acid in the reaction? - correct answer H2SO4(aq) Which compound plays an important role in leather processing and electroplating? - correct answer hydrochloric acid Which of the following best defines an acid? - correct answer An acid has more hydrogen ions in solution. What is a base used in toothpaste? - correct answer magnesium hydroxide When does phenolphthalein turn pink? - correct answer in the presence of a base Which statement would indicate the presence of an acid? - correct answer It reacts with active metals to form a gas. Which is a property of acids in aqueous solutions? - correct answer They increase the concentration of