c) Suggest why hydrogen chloride, HCI, has a lower boiling point than hydrogen cyanide, HCN HCN HCI M 27.03 36.51 Boiling point 26.00°C - 85.05°C
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
ONLY QUESTION (C) IS SOLVED
![The overall equation for the production of hydrogen cyanide, HCN, is shown below
CH (g) + NH3(g) + 0₂(g) -> HCN(g) + 3H₂O(g)
a)
b)
i)
ii)
iii)
i)
ii)
iii)
State why NH, is a Lewis base
-3
Calculate the pH of a 1.00 x 10 mol dm aqueous solution of ammonia
Justify whether a 1.0dm³ solution made from 0.10mol NH3 and 0.20mol HCI will
form a buffer solution
Sketch the shape of one sigma (o) and one pi (π) bone
Identify the number of sigma and pi bonds in HCN
State the hybridization of the carbon atom in HCN
c) Suggest why hydrogen chloride, HCI, has a lower boiling point than hydrogen cyanide,
HCN
HCN
HCI
M₂
27.03
36.51
Boiling point
26.00°C
- 85.05 C
d) Explain why transition metal cyanide complexes are coloured [3]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5279dc88-07c1-4158-88c6-1bcbce8dada0%2F329db1e1-ef94-473e-91c4-182b927f46e9%2Fj23g7ks_processed.jpeg&w=3840&q=75)
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