Question step one9. The species HdosO, HCOstep step 3 – , HSOcuatro – 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.
Question 22. Ionic unit of water within 310 K are dos.7 x ten -14 What’s the pH out-of natural liquids at this temperature? Answer:
Concern 23. This new aqueous solution out-of glucose will not run strength while whenever sodium chloride try put in liquids, they conducts power. Justify that it declaration. Answer: 1. Sugar are a non electrolyte just in case it dissolves in the water, there won’t be any ionisation happen. When there is zero free ions, it will not conduct power.
O are acid
2. When salt chloride is set in h2o, it’s completely ionised giving Na ions and you can Cl – ions. Considering the visibility out-of ions, they’ll be likelihood of electhcal conductance. Given that ions try carriers of household current.
step three. An effective Lewis acid are an electron lacking molecule and you will with the capacity of taking a couple of electrons and you will good Lewis feet try electron rich molecule and with the capacity of donating a couple of electrons.
Matter 25. The fresh new sodium out-of good acid and you can strong base will not experience hydrolysis. Describe. Answer: 1. In such a case, none the cations neither the latest anions go through hydrolysis. Plus the solution remains natural.
2. Such as for instance, about aqueous services of NaCl, the ions Na + and you will Cl – ions haven’t any tendency to behave with H + otherwise OH – ions from h2o.
Simply because the newest you’ll be able to facts of such response is NaOH and you will HCI which can be completely dissociated. Consequently, there is absolutely no improvement in the newest intensity of W and you can OH – ions thus the clear answer continues to are still basic.
Question step one. Determine Lowry – Bronsted principle out of acidic and you may feet. Answer: 1. Based chicas escort Rancho Cucamonga on Lowry-Bronsted theory, an acid means a compound who may have a propensity in order to give a great proton to another material and you can feet was an effective compound who has a tendency to deal with a proton off their compound.
3. When HCI is dissolved in H2O, HCI donates a proton to H2O. Thus HCI behaves as an acid and H2O is a base. HCI + H2O \(\rightleftharpoons\) H3O + + Cl –
Question 2. Explain the reaction of water with ammonia by proton theory. Answer: 1. When ammonia dissolved in water, it accepts a proton from water. In this case, ammonia (NH3) acts as a base and H2
Classify another kinds toward Lewis acids and you can Lewis basics and you will tell you how these may act as Lewis acid I Lewis legs?
3. The species that remains after the donation of a proton is a base (Base1) and is called the conjugate base of Bronsted acid (Acid1). In other words, chemical species that differ only by a proton are called conjugate acid base pairs Conjugate acid – base pair