- Messages
- 382
- Reaction score
- 315
- Points
- 73
(5) HCl is polar and therefore, there are forces of attraction between H+ and Cl-.
Ideal gases do not have forces of attraction!
(15) The balanced equation is 2Ca(NO3)2 ----> 2CaO + 4NO2 + O2
No. of moles of Ca(NO3)2 = 8.2/164 = 0.05
The mole ratio of Ca(NO3)2 to Oxygen is 2 : 1. Hence, no of moles of O2 formed becomes 0.025
No. of moles = volume/molar volume
0.025 = x/24
x = 0.6 dm3 = 600 cm3
(16) Thermal stability of elements increase as you move down the group II. As you can see, Barium is the most thermally stable from the options.
Barytocalcite, BaCO3.CaCO3 will form C02 and CaO, and BaCo3 remains in the solution due to its high thermal stability. This reacts with HCl
(17)I'm not very sure of this.. but here's what I think:
A ligand is an ion that forms a dative bond. This means that it contains a lone pair of electrons. Ag+ ion has an incomplete outer shell which forms a dative bond with ammonia.
(20) Apart from the cis-trans isomers, the third one is (Cl2)C = C(H2). So the total becomes 3
(24) butan-2-ol gives two main products: CH2=CHCH2CH3 and CH3CH=CHCH3. But CH3CH=CHCH3 can form the cis-and trans isomers.
Hence, 3 products are formed.
Hope that helped
