Question

If two substances react to form one product , a ______ reaction has occurred

A - double displacement
B - single displacement
C - combustion
D - synthesis

Answer 1

If two substances react to form one product , a synthesis reaction has occurred

Step-by-step explanation:

The reaction in which multiple substances react to form a single product then it is called a synthesis reaction.

The synthesis reaction in general form is given by:

`A+B\rightarrow AB`

where
`A\ and\ B` maybe any compound or elements and
`AB` is the compound product formed by the reactants.

An example of this form of reaction is:

Formation of water

`2H_2(g)+O_2(g)\rightarrow 2H_2O(g)`

Here 2 moles of hydrogen reacts with 1 mole of oxygen to give 2 moles of water.