Which of the following is an acid-base neutralization reaction? (1 point) Sn + 2HBr yields SnBr2 + H2 HCl + KOH yields KCl + H2O 2AlCl3 + 3Ca(OH)2 yields 2Al(OH)3 + 3CaCl2 2C2H6 +7O2 yields 4CO2 + 6H2O
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Answer:
Explanation:
Sn + 2HBr = SnBr₂ + H₂
Here HBr is an acid but Sn is not a base . It is a metal . So it is not an acid - base reaction .
HCl + KOH = KCl + H₂O
HCl is an acid and KOH is a base so it is an acid base reaction.
2AlCl₃ + 3Ca(OH)₂ = 2Al(OH)₃ + 3CaCl₂
It is an acid base reaction . It is so because aluminium hydroxide is a lewis acid and calcium hydroxide is a base . So it is an acid base reaction .
2C₂H₆ +7O₂ = 4CO₂ + 6H₂O
It is not an acid base reaction . It is actually an example of oxidation reaction in which ethane burns in oxygen to give carbon dioxide and water.
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The correct formula for converting Celsius to Kelvin is T(K) = t(°C) + 273.15 and the reverse is t(°C) = T(K) - 273.15. The Kelvin scale, unlike Celsius and Fahrenheit scales, is an absolute temperature scale and starts from absolute zero.
The relationship between the absolute temperature on the Kelvin scale and the Celsius temperature is defined by a simple conversion formula: T(K) = t(°C) + 273.15. This formula expresses the temperature T in Kelvin as the temperature t in Celsius degrees plus 273.15. The reverse conversion, from Kelvin to Celsius, is represented by the formula: t(°C) = T(K) - 273.15. The other equations presented in the question appear to include irrelevant or incorrect elements and are not standard conversions between Celsius and Kelvin.
It's crucial to note that the Kelvin scale, unlike the Celsius and Fahrenheit scales, is an absolute temperature scale based on absolute zero, the theoretically lowest possible temperature. Therefore, there are no negative temperatures in Kelvin. This is one of the many reasons why it is used in scientific and engineering contexts.
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Answer:
T(kelvins)=T(Degree celsius) +273.15
Explanation:
That's all
B. Condensation
C. Evaporation
D. Boiling
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The escape of molecules from the surface of a liquid is known as .
Further Explanation:
Phase transition is defined as the change from one state to another state but no change in chemical composition is observed. It is also known as a phase change, state change or physical change.
Sublimation
It is the process by which a substance directly gets converted from solid to vapor phase, without going through the liquid state. Naphthalene and dry ice are substances that undergo sublimation.
Condensation
It is the phase transition that occurs when vapors are converted into liquid. This is done by changing the temperature and pressure of the substance.
Evaporation
In this process, liquid changes into vapors. Here, temperature has to be elevated or heating is done. Energy is used up in the substance and therefore it is an endothermic process.
Boiling
It is a phase change in which liquid is converted to a gaseous state when liquid is heated to its boiling point.
Learn more:
1. Identify the phase change in which crystal lattice is formed: brainly.com/question/1503216
2. The main purpose of conducting experiments: brainly.com/question/5096428
Answer details:
Grade: Senior School
Subject: Chemistry
Chapter: Phase transition
Keywords: exothermic, endothermic, sublimation, deposition, vaporization, melting, phase transition, phase change, state change, physical change, solid state, liquid state, vapor state.
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