Is NaOH +HCl Exothermic or Endothermic?

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  • เผยแพร่เมื่อ 29 ก.ย. 2020
  • In this video we'll determine whether the reaction of NaOH and HCl is exothermic or endothermic. Since the addition of NaOH + HCl = NaCl + H2O we can identify it as neutralization reaction. Neutralization reactions are exothermic.
    We can also look up the change in enthalpy (ΔH). Since ΔH is negative for this reaction, heat will be given off to the surroundings and we have an exothermic reaction.
    -Exothermic-
    Heat Released (to surroundings)
    Temperature (of Surroundings) Increases
    - ΔH (negative enthalpy)
    Products are at a lower energy.
    Examples : Burning Paper, Neutralization Reactions, Respiration, Freezing,
    CaCl2 + H2O
    -Endothermic-
    Heat Absorbed (from surroundings)
    Temperature (of Surroundings) Decreases
    + ΔH (positive enthalpy)
    Products are at a higher energy.
    Examples: Thermal Decomposition, Photosynthesis, Melting, NH4Cl + H2O
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    How to Balance the Net Ionic Equation: • How to Write the Net I...

ความคิดเห็น • 5

  • @josephtraverso2700
    @josephtraverso2700 3 ปีที่แล้ว +7

    I tried to think about why it’s exothermic and came up with the following explanation...
    Everything in this reaction is a spectator ion except H+ and OH-. So we see that two “charges” are coming together to form a bond. Since forming a bond releases energy, this reaction is exothermic.

    • @salihak.1691
      @salihak.1691 3 ปีที่แล้ว +3

      Thank you! I needed this for my homework today

    • @josephtraverso2700
      @josephtraverso2700 3 ปีที่แล้ว +2

      @@salihak.1691 glad I could help!

  • @babymingo920
    @babymingo920 ปีที่แล้ว

    Does this mean that the solution gets colder?

    • @wbreslyn
      @wbreslyn  ปีที่แล้ว +1

      Exothermic means is gives off heat. So that gets warmer.