Combustion Reactions

Q.

Write the balanced equation for burning of natural gas

Q.

List 20 balanced chemical equations.

Q.

What is the balanced equation for methane with oxygen?

Q. Question 19.4

Write the balanced chemical equation for the following reaction and identify the type of the reaction.

Ethene is burnt in the presence of oxygen to form carbon dioxide and water, and releases heat and light.

Q.

Write the balanced chemical equations for the following.

Combustion of ethanol

Q.

Which of the following is undergoing substitution reaction?

1. Ethyne to ethane

2. Ethene to ethane

3. Propene to propane

4. Methane to Carbon tetrachloride

Q.

Define products.

Q. Carbon plays an important role in our life. Explain ( 6 points )

Q.

Is it possible to have combustion without oxygen?

__

Q. Two moles of ethane will need ______ moles of oxygen for complete combustion.

1. 2
2. 9
3. 7
4. 5

Q. A mixcture of CO2 and CO is passed over red hot graphite when 1 mole of mixture changes to 33.6L at stp. Mole fraction of CO2 in mixture is?

Q. An ideal solution was obtained by mixing methanol and ethanol. if the partial vapour pressure of methanol and ethanol are 2.619 kPa and 4.556kPa respectively, the composition of the vapour (in term of mole fraction) will be (a) 0.635 methanol, 0.365 ethanol (b) 0.365 methanol, 0.635 ethanol (c) 0.574 methanol, 0.326 ethanol (d) 0.173 methanol, 0.827 ethanol

Q.

Write balanced chemical equation for the preparation of ethanol from ethyl chloride.

Q.

Why does ethyne (acetylene) burn with a sooty flame?

Q.

What happens when sodium ethanoate is heated with soda lime?

1. Carbon dioxide gas is evolved

2. Methane gas is evolved

3. Ethane gas is evolved

4. Hydrogen gas is evolved

Q.

combustion reaction produce carbon dioxide and water so

Is magnesium + oxygen -------> magnesium oxide

a combustion reaction if yes then why heat , water and co2 didn't produce

Q. Why do alkanes burns with blue or clear flames?

Q.

Explain natural and man-made sources of air pollution

Q.

How has industrialisation led to air pollution ? Explain in three points.

Q. Why does an unsaturated hydrocarbon leaves a sooty flame on burning?

Q.

Common examples of SPM are dust, soot, __________and fly ash.

Q. Find A and B from the following:
$C{H}_{3}C{H}_{2}OH+O_2\to A+B+HeatandLight$

1. $C+H_{2}O$
2. $C{H}_4$
3. $H_2$
4. $C{O}_{2}and{H}_{2}O$

Q.

Air is necessary for combustion. (True or False). Also write the false statements in their correct form.

1. True
2. False

Q.

The cooking gas used in our homes is mainly an:

1. Alkane

2. Carboxylic acid

3. Haloalkane

4. Alkene

Q. Type of bonding present between monomers to form polymer chain is ______

1. dispersion forces
2. hydrogen bonding
3. covalent
4. ionic

Q.

State two disadvantages of incomplete combustion.

Q. ntWater and chlorobenzene are immiscible liquids. There mixture boils at 90^°C under a reduced pressure of 7.8210 Pa. The vapour pressure of pure water at 90^°C is 7.0310 Pa. On weight percent basis, chlorobenzene in the distillate is equal to (molecular weight of chlorobenzene is 112.5 g/mol)n ntn ntn nt50/60/70/80n

Q.

Why carbon and its compounds are used as fuels for most applications?

Q.

Name the compounds formed when methane burns in :
(a) sufficient air,
(b) insufficient air.
Give a balanced equation.

Q. Balance the reactions:
${CH}_4+O_2\to {CO}_2+H_{2}O$