the system is in constant temperature
so it follows Boyle's law
i.e.P1V1=P2P2
where P1=initial pressure=788 tour
P2=final pressure= ?
V1=initial volume=235 ml
V2=final volume=0.115 ml
Friedel-Crafts alkylation requires dry conditions because AlCl3 may combine with water thereby hindering the reaction.
Friedel-Crafts involves the introduction of an alkyl group into a benzene ring. This occurs by electrophilic substitution of a proton on the aromatic ring with an alkyl group.
The set up must be free from water because water could inactivate the Lewis acid (AlCl3) due to combination of the Lewis acid with water thereby hindering the reaction.
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Answer:
Lemon juice has lowest pH.
Explanation:
pH is the negative log of hydrogen ion concentration. By increasing the Hydrogen ion concentration pH will decrease.
pH = -log [H⁺]
According to pH scale,
The pH of 7 is consider neutral. The pH below the 7 is consider acidic and above the 7 is basic.
The sodium hydroxide is strongest base because it fully dissociate into ions.
It dissociate to gives the sodium and hydroxyl ions and solution became more basic.
NaOH → Na⁺(aq) + OH⁻(aq)
Its pH is 12. It is also known as caustic soda.
The pH of blood is vary from 7.35 - 7.45. it is slightly alkaline.
The pH of lemon juice is ranging between 2-3.
The pH of tap water is ranging between 6-8.5.
From above given information it can be noticed that lemon juice have lowest pH i.e 2-3. It is acidic, because its pH is less than 7.
Answer:
20cm3
Explanation:
density = mass/volume, so volume = mass/density
volume = (54g)/(2.7g/cm3)= 20cm3
