One mole of a hydrocarbon contains 48 g of carbon. If it vapour density is 28, the hydrocarbon is?
an alkane
an alkene
an alkyne
aromatic (C = 12, H = 1)
Correct answer is B
No explanation has been provided for this answer.
The general formula of alkanoates is?
RCHO
R2CO
RCOOH
RCOOR
Correct answer is D
Otherwise known as ESTERS, they are easily gotten from a reaction between the CARBOXYLIC acids and ALCOHOLS
RCOOH + R'OH yields a combination of an ester(RCOOR') and water.
When sodium is added to ethanol, the products are?
sodium hydroxide and water
sodium hydroxide and hydrogen
sodium ethoxide and water
sodium ethoxide and hydrogen
Correct answer is D
No explanation has been provided for this answer.
Which of the following compounds is NOT an isomers of 2,2 dimethylbutane?
2-methylbutane
3-methylpentane
2,3-dimethylbutane
2-methylpentane
Correct answer is A
No explanation has been provided for this answer.
Which of the following is the correct order of decreasing activity of the metals Fe, Ca, Al and Na?
Fe> Ca> Al> Na
Na> Ca> Al> Fe
Al> Fe> Na> Ca
Ca> Na> Fe>, Al
Correct answer is B
The order of reactivity of metals is as follows, Potassium > Sodium > Lithium > Calcium > Magnesium > Aluminium > Zinc > Iron > Copper > Silver > Gold.