dianmadikall dianmadikall

06-06-2016
Chemistry

contestada

5. Which of the following is a synthesis reaction? (2 points)
2H2 + O2 → 2H2O
2H2O2 → 2H2O + O2
CaCO3 → CaO + CO2
2AgNO3 + Zn → 2Ag + Zn(NO3)2

Respuesta :

CJD2015anime CJD2015anime

06-06-2016

2H2 + O2 = 2H2O since two elements created a compound, in this case water.

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RomeliaThurston RomeliaThurston

17-06-2019

Answer: The correct answer is [tex]2H_2+O_2\rightarrow 2H_2O[/tex]

Explanation:

Synthesis reaction is defined as the reaction in which two smaller substances combine together to form a large single compound.

[tex]A+B\rightarrow AB[/tex]

From the given options:

Option A: [tex]2H_2+O_2\rightarrow 2H_2O[/tex]

This is a synthesis reaction and only one product is forming.

Option B: [tex]2H_2O_2\rightarrow 2H_2O+O_2[/tex]

This is a decomposition reaction.

Option C: [tex]CaCO_3\rightarrow CaO+CO_2[/tex]

This is a decomposition reaction.

Option D: [tex]2AgNO_3+Zn\rightarrow 2Ag+Zn(NO_3)_2[/tex]

This is a single displacement reaction.

Thus, the correct answer is [tex]2H_2+O_2\rightarrow 2H_2O[/tex]

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