Chemistry High School

Which of the following reactions is an example of a single replacement reaction?

Select one:
a. H2 + O2 --> H2O
b. CH4 + O2 --> CO2 + H2O
c. NaI + Br2 --> NaBr + I2
d. H2CO3 --> H2O + CO2

Answers

Answer 1

Answer:

C

Explanation:

Single replacement reactions is when only one element gets replaced / changed. This usually looks like this: A + BC = B + AC or A + BC = C + AB

Therefore, the number of reactants must be equal to the number of products, since no actual combinations / break ups are occurring.

Answers A and D are eliminated right away since the number of products don't equal the number of reactants.

Answer B is wrong because it does not show simply one element being replaced, instead, two compounds are being formed. It doesn't look like the example given.

Only answer C shows that one element is replaced:

The iodine is replaced with bromine to form NaBr + I2

Answer 2

The chemical equation NaI + Br₂ --> NaBr + I₂ is an example of single replacement reaction.

What is chemical equation?

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

Learn more about chemical equation,here:

https://brainly.com/question/28294176

#SPJ2

Related Questions

I NEED HELP BIG TIME PLZ HELP ME (ILL GIVE 40 POINTS) What is true of electrons? (3 points) a They are positively charged and located inside the nucleus. b They are positively charged and located outside the nucleus. c They are negatively charged and located inside the nucleus. d They are negatively charged and located outside the nucleus.

Answers

Answer:

d.

Explanation:


please help :) thanks

Answers

Explanation:

it is the one you have selected because it is the only solid one

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