20
25
50
75
90
Correct answer is D
No explanation has been provided for this answer.
Ethyl ethanoate
Methyl ethanoate
Ethyl methyl ketone
Butanol
None
Correct answer is A
This is an ESTERIFICATION REACTION of Alkanoic acid and Alkanol to yield an Ester
20 cm3 of 1 M H\(_2\)SO\(_4\) is mixed 20 cm\(^3\) of 1 M NaOH. The resulting solution is?
acidic with a molarity of 0.50 M H2SO4
acidic with a molarity of 0.25 H2SO4
neutral
alkaline with a molarity of 0.25 M NaOH
alkaline with a molarity of 0.50 M NaOH
Correct answer is A
The balanced equation for the reaction is:
\(2NaOH + H_2 SO_4 \to Na_2 SO_4 + 2H_2 O\)
\(\therefore 1M H_2 SO_4 \to 2M NaOH\)
\(1M NaOH \to 0.5M H_2 SO_4\)
The resulting solution is Acidic with 0.5M H\(_2\)SO\(_4\).
When ethene gas reacts with chlorine gas to form 1, 2-dichloroethene, the reaction is called?
substitution
addition
polymerization
hydrolysis
reduction
Correct answer is B
No explanation has been provided for this answer.
Which ONE of the following statements is true?
All alkali metals salts dissolves with dissociation in water
Most ionic substances are easily vaporized
Ionic substances exist only as liquid
Non-ionic substances are good electrolytes
Nitrogen exists in a trivalent state in ammonium salts
Correct answer is A
All alkali metal salts are soluble in water.