Question

1. According to collision theory, which of the following factors does affect whether or not a reaction will take place?

a) number of valence electrons

b) molecular mass

c) oxidation number

d) collision orientation

e) percent composition

f) more than one response is correct (i.e. does affect reaction)

g) no correct response

2. In which type of reaction are all the reactants and all the products elements?

a) combustion reaction

b) synthesis reaction

c) single-replacement reaction

d) double replacement reaction

e) decomposition reaction

f) a) and b)

g) a) and c)

h) a) and d)

i) a) and c)

j) b) and d)

k) b) and e)

l) c) and d)

m) c) and e)

n) d) and e)

o) a) and b) and d)

p) a) and d) and e)

q) b) and c) and d)

r) no correct response

Answer 1

ANS-[1] Collision theory is based on the following postulates:

1. The rate of a reaction is proportional to the rate of reactant collisions:
2. The reacting species must collide in an orientation that allows contact between the atoms that will become bonded together in the product.
3. The collision must occur with adequate energy to permit mutual penetration of the reacting species’ valence shells so that the electrons can rearrange and form new bonds (and new chemical species). CORRECT OPTIONS-(d) collision orientation ANS-2 (a) Combustion, a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame. IN THIS REACTION PRODUCT IS NOT A ELEMENT. EXAMPLE C(g)+O₂(g)-------- CO₂+HEAT AND LIGHT (b) A synthesis reaction occurs when two or more reactants combine to form a single product. ... An example of a synthesis reaction is the combination of sodium (Na) and chlorine (Cl) to produce sodium chloride (NaCl). IN THIS REACTION REACTANT IS NOT A ELEMENT. (c)A single replacement reaction occurs when one element replaces another in a single compound. This type of reaction has the general equation: A + BC → B + AC.   ALL REACTANT AND PRODUCT IS NOT A ELEMENT (d)A double replacement reaction is a chemical reaction where two reactant ionic compounds exchange ions to form two new product compounds with the same ions .ALL ARE NOT ELEMENT   (e)A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds. ALL REACTANT AND PRODUCT IS NOT A ELEMENT CORRECT OPTION--------------(-r) no correct response HOPE THIS WILL HELP YOU THANKS A LOT