Classify the following reaction: 2H2O 2H2 + O2

Chemistry

2 answers:

Likurg_2 [28]2 years ago

6 0

Synthesis i do believe

strojnjashka [21]2 years ago

5 0

The answer is: C. decomposition.

Decomposition is reaction where one substance is broken down into two or more simpler substances.

Balanced chemical reaction of water decomposition: 2H₂O → 2H₂ + O₂.

This is decomposition reaction, because from one molecule (water) two molecules (hydrogen and oxygen) are produced.

Chemical decomposition is opposite of chemical synthesis.

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Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are mixed. If a precipitate will

stiks02 [169]

The reaction between copper II chloride and sodium sulfide as well as lead II nitrate and potassium sulfate both produce precipitates.

The solubility of a substance in water is in accordance with the solubility rules. It is possible that a solid product may be formed when two aqueous solutions are mixed together. That solid product is referred to as a precipitate.

Now, we will consider each reaction individually to decode whether or not a precipitate is possible.

In the first reaction, we have; CuCl2(aq) + Na2S(aq) ---->CuS(s) + 2NaCl(aq). A precipitate (CuS) is formed.
In the second reaction, Pb(NO3)2(aq) + 2KNO3(aq) ----> PbSO4(s) + KNO3(aq), a precipitate PbSO4 is formed
In the third reaction, NH4Br(aq) + NaOH(aq) ----->NH3(g) + NaBr(aq) + H2O(l), a precipitate is not formed here.

Learn more: brainly.com/question/11969651

6 0

2 years ago

Calculate the volume of 2.65 moles of N2O gas at STP.

Reptile [31]

Answer:

63.6 dm³

Explanation:

Volume of gas= no. of moles ×24dm³

Thus, volume of N₂O

= 2.65 × 24

= 63.6 dm³