Keyword Analysis & Research: reaction

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Frequently Asked Questions

What are the six types of chemical reactions?

The six types of chemical reactions are synthesis, decomposition, single-replacement, double-replacement, acid-base, and combustion. Chemical reactions can be generalized by chemical groups. These groups are labeled A, B, C, and D. Synthesis and decomposition reactions occur when chemical groups combine or separate.

What reaction absorbs heat?

Key Concepts. Enthalpy of Reaction (Heat of Reaction) is the heat liberated or the heat absorbed when a chemical reaction takes place. An exothermic reaction liberates heat, temperature of the reaction mixture increases. An endothermic reaction absorbs heat, temperature of the reaction mixture decreases.

What is a type of reaction?

Also known as a “single replacement reaction”, this type of reaction occurs when a pure element switches places with an element in a chemical compound. Essentially, two atoms switch places, where one of the atoms isn’t stuck to anything else.

How do you calculate the heat of reaction?

The the heat released or absorbed (the heat change) q, in joules (J), for the reaction is calculated: heat change = mass × specific heat capacity × temperature change q = m × cg × ΔT. The enthalpy change, ΔH, in kJ per mole of a given reactant for the reaction is calculated: ΔH = heat change/1000 ÷ moles.

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