Which of the following is synthesis reaction?

Synthesis Reaction Description Plus Examples

Two or more simple substances combine to form more complex products

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Synthesis Reaction Description Plus Examples
Two or more simple substances combine to form more complex products
General Form of Synthesis Reactions
Recognizing Synthesis Reactions
The correct option is D8Fe + S8 à 8FeS8Fe+S8→8FeS is an example of synthesis reaction. A synthesis reaction is a reaction in which two or more substances combine to form a new compound. When two elements combine in a synthesis reaction, the only product that can be made is a binary compound. A binary compound is a compound composed of only two elements: A+B→AB
Is 2H2 O2 a synthesis reaction?
Which of the following can be called synthesis reaction?

In a synthesis reaction, simple reactants combine to form a more complex product. Rafe Swan / Getty Images

While there are many types of chemical reactions, they all fall into at least one of four broad categories: synthesis reactions, decomposition reactions, single displacement reactions, and double displacement reactions.

A synthesis reaction or direct combination reaction is a type of chemical reaction in which two or more simple substances combine to form a more complex product. The reactants may be elements or compounds, while the product is always a compound.

General Form of Synthesis Reactions

The general form of a synthesis reaction is:

A + B → AB

Here are some examples of synthesis reactions:

Water:
2 H2(g) + O2(g) → 2 H2O(g)
Carbon dioxide:
2 CO(g) + O2(g) → 2CO2(g)
Ammonia:
3 H2(g) + N2(g) → 2 NH3(g)
Aluminum oxide:
4 Al(s) + 3 O2(g) → 2 Al2O3(s)
Iron sulfide:
8 Fe + S8 → 8 FeS
Potassium chloride:
2 K(s) + Cl2(g) → 2 KCl(s)

Recognizing Synthesis Reactions

The hallmark of a synthesis reaction is that a more complex product is formed from the reactants. One easy-to-recognize type of synthesis reaction occurs when two or more elements combine to form a compound. The other type of synthesis reaction happens when an element and a compound combine to form a new compound.

Basically, to identify this reaction, look for a product that contains all the reactant atoms. Be sure to count the number of atoms in both the reactants and the products. Sometimes when a chemical equation is written, "extra" information is given that might make it hard to recognize what is going on in a reaction. Counting numbers and types of atoms makes it easier to identify reaction types.

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Solution

The correct option is D8Fe + S8 à 8FeS8Fe+S8→8FeS is an example of synthesis reaction. A synthesis reaction is a reaction in which two or more substances combine to form a new compound. When two elements combine in a synthesis reaction, the only product that can be made is a binary compound. A binary compound is a compound composed of only two elements: A+B→AB

Which of the following is a synthesis reaction? BaO + CO2 → BaCO3 CH4 + O2 → CO2 + H2O FeCO3 → FeO + CO2 2NH3 → 2N2 + 3H2 Question 2(Multiple Choice Worth 4 points) (04.02 LC) What is true of synthesis and decomposition reactions? Synthesis reactions require more energy than decomposition reactions. Synthesis reactions produce more products than decomposition reactions. Synthesis reactions are the opposite of decomposition reactions. Synthesis reactions have fewer reactants than decomposition reactions. Question 3(Multiple Choice Worth 4 points) (04.02 MC) An unbalanced chemical equation is shown: 2NaN3 → 2Na + N2 Which of the following statements explains why the equation is not balanced? Four molecules of N2 should be produced during the decomposition. Three molecules of N2 should be produced during the decomposition. Four molecules of N2 should be produced during the synthesis reaction. Three molecules of N2 should be produced during the synthesis reaction. Question 4(Multiple Choice Worth 4 points) (04.02 MC) Which chemical equation correctly represents the reaction that takes place when nitrogen gas and hydrogen gas are formed as ammonia decomposes? N(g) + H3(g) → NH3(g) 2N(g) + 3H2(g) → 2NH3(g) 2NH3(g) → N2(g) + 2H3(g) 2NH3(g) → N2(g) + 3H2(g) Question 5 (True/False Worth 2 points) (04.02 LC) A synthesis reaction can be identified because it only has pure elements on the left side of the arrow and compounds on the right side of the arrow. True False Question 6 (True/False Worth 2 points) (04.02 LC) The reaction K(s) + 2H2O(l) → 2KOH(aq) + H2(g) is a decomposition reaction. True False

Is 2H2 O2 a synthesis reaction?

The chemical reaction 2H2+O2→2H2O 2 H 2 + O 2 → 2 H 2 O is classified as a synthesis reaction. Synthesis reactions occur when two or more reactants combine in order to form a singular product.

Which of the following can be called synthesis reaction?

Answer: Solution: When two or more substances (element or compounds) react together to combine and form a new product, which is a compound with new properties. They synthesize to form a new substance, hence it is called a synthesis reaction.