Question 19. The species HdosO, HCOstep three – , 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) this page 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 unit out-of drinking water within 310 K is actually 2.7 x 10 -fourteen What is the pH from basic h2o at this temperature? Answer:
Question 23. The fresh aqueous services off sugar does not run electricity whereas whenever sodium chloride is actually set in water, they conducts energy. Validate it declaration. Answer: step 1. Glucose was a low electrolyte assuming it dissolves within the water, there won’t be any ionisation occurs. If you have no 100 % free ions, it does not conduct energy.
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dos. Whenever sodium chloride was put in liquids, it’s completely ionised to offer Na ions and you will Cl – ions.Lees verder »Build brand new conjugate acids for the following Bronsted bases: NH