Match the number with the correct type of reaction it is.

1. na+ + cl- → nacl
2. ccl4 → c + 2cl2
3. h+cl- + na+oh- → na+cl- + h2o
4. adp + p + e atp

a. decomposition reaction
b. exchange reaction
c. reversible reaction
d. synthesis reaction

1. → D, 2.→ A, 3. → B, 4. → C.

Explanation:

1.  

Synthesis reaction is a type of chemical reaction in which two more reactants combines together to form a single product.

2.

Decomposition reaction is a type of chemical reaction in which a single compound break down into its constituting elements.

3.

Exchange reaction is a type of chemical reaction in which ions of reactant exchange their respective position with each other to form a new substance as a product.

4. ADP + P + E → ATP

Reversible reaction is a type of chemical reaction which reversed. In this reactants on reaction gives products and when products are made to react gives reactant as product.

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.