Question

2:29 PM Sat Apr 4 100% Done W20 tutorial 5 assignment13 Part 1: Predicting and explaining acid-base properties For each of the two claims below, you must do three things: 1. Clearly define the word or phrase in that claim that is in bold blue underlined text. 2. State if the claim is true or false. 3. If the claim is true, your answer should support it by giving facts we have learned in this course explaining the reasoning that shows why this claim is always true. Your explanation should do more than repeat the claim in different words, but focus on answering 'why?! If the claim is false, your answer should give a specific counter-example (a compound for which this statement is not true), along with facts and reasoning to show why your counterexample contradicts this claim. Claim 1: All negatively-charged ions, X+ (aq), will act as Bronsted-Lowry bases in water because they can accept an H. Type your answer here.

Answer 1

Bronsted - lowry bases : a bronsted lowry base can be defined as a substance which has the tendency to accept a proton. for example carbonate is a base in water as it accepts proton ( H+) from water .

CO2-3  + H2O = HCO3- + OH-

this claim is true .

reason : this claim is always true because a negatively charged cation always have lone pairs on the atom carrying the negative charge.since these negatively charged anion are electron rich , their lone pairs can attack on H of water molecule to abstract proton and thus form OH-

> х. га = X-H м , а + ОИ + or ои + Ои . в + и 10 —С o=0 - о I Но,