Given the balanced equation representing a reaction:

zn(s) + h2so4(aq) → znso4(aq) + h2(g)

which type of reaction is represented by this equation?

1.

decomposition
2.

double replacement
3.

single replacement
4.

synthesis

Option (3) is the correct answer.

Explanation:

A single replacement reaction is defined as the reaction where an element on reaction with a compound tends to displace another element in that compound.

For example, is a single replacement reaction.

Also, when number of atoms on reactant side equal to the number of atoms on product side then it is known as a balanced chemical reaction.

In a synthesis reaction, two elements combine together and result in the formation of a single product.

For example,  

In a decomposition reaction, a compound splits or breaks into two atoms.

For example,  

Thus, we can conclude that represents a balanced single replacement chemical reaction.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.