Question step 19. The species HdosO, HCO3 – , HSO4 – and NH3 can act both as Bronsted acid and base. For each case, give the corresponding conjugate acid and base. Answer:
Question 20. (a) OH – ions (b) F – (c) H + (d) BCI3 Answer: (a) OH – ions can donate an electron pair and act as Lewis base. (b) F – ions can donate an electron pair and act as Lewis base. (a) H + ions can accept an electron pair and act as Lewis base. (b) BCl3 can accept an electron pair since Boron atom is electron deficient. It is a Lewis acid.
Question 21. Predict the acidic, basic or neutral nature of the solutions of the following salts: NaCI, KBr, NaCN, NH4NO3, NaNO2, KF. Answer: NaCN, NaNO2, KF solutions are basic, as they are salts of strong base, weak acid. NaCl, KBr solutions are neutral, as they are salts, of strong acid, strong base. NH4NO3 solution is acidic, as it is a salt of strong acid, weak base.
Matter twenty two. Ionic tool out of h2o on 310 K is actually dos.seven x ten -fourteen What’s the pH of natural drinking water at this temperatures? Answer:
Matter 23. This new aqueous service regarding sugar cannot perform stamina whereas whenever salt chloride try set in h2o, they conducts energy. Validate it declaration. Answer: step 1. Sugar are a non electrolyte assuming they dissolves in water, there won’t be any ionisation happen. If there’s no totally free ions, it generally does not carry out fuel. Continue reading