Combination Reaction
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Q. Identify the combination reaction(s) among the following:
- 2C8H18+25O2→16CO2+18H2O
- 8Fe+S8→8FeS
- MgO+CO2→MgCO3
- 3Pb(NO3)2+2AlCl3→3PbCl2+2Al(NO3)3
Q. Balance the following chemical equations and identify the type of chemical reaction.
(a) HgO(s)Heat−−→Hg(l)+O2(g)
(b) Na(s)+S(s)Fuse−−→Na2S(s)
(c) TiCl4(l)+Mg(s)→Ti(s)+MgCl2(s)
(d) CaO(s)+SiO2(s)→CaSiO3(s)
(e) H2O2(l)UV−−→H2O(l)+O2(g)
(a) HgO(s)Heat−−→Hg(l)+O2(g)
(b) Na(s)+S(s)Fuse−−→Na2S(s)
(c) TiCl4(l)+Mg(s)→Ti(s)+MgCl2(s)
(d) CaO(s)+SiO2(s)→CaSiO3(s)
(e) H2O2(l)UV−−→H2O(l)+O2(g)
Q. Identify the general representation of a combination reaction.
- A+B→AB
- A+B→B+C
- AB→A+B
- A+B+C→X+Y
Q.
A reaction in which a single product is formed from two or more reactants is known as
Q. C(s)+O2(g)→CO2(g)
Identify the type of chemical reaction.
Identify the type of chemical reaction.
- Double displacement reaction
- Displacement reaction
- Decomposition reaction
- Combination reaction
Q.
A reaction in which a single product is formed from two or more reactants is known as
Q. Which of the following compound is obtained when quicklime reacts with water?
- Ca(NO3)2
- Ca(OH)2
- Ca(HCO3)2
- CaCO3
Q.
Which of the following are examples of combination reactions?
(i) CaO+O2→2CaCO3
(ii) CaCO3→CaO+CO2
(iii) MgO+CO2→MgCO3
(iv) Fe+S→FeS
(v) 2AgCl+sunlight→2Ag+Cl2
(vi) CH4+2O2→CO2+2H2O
(vii) Na2O+H2O→2NaOH
(ii), (vii), (iv), (vi)
(i), (ii), (v), (vii)
(ii), (iii), (iv), (vi)
(i), (iii), (iv), (vii)
Q.
Formation of water is an example of ____________ reaction
Chemical and combination reaction
Combination reaction
Chemical reaction
Substitution reaction
Q. Complete the statements:
The probability of an event that is certain to happen is___ .
Such an event is called___
The probability of an event that is certain to happen is
Such an event is called