Hey there! Sign in to join this conversationNew here? Join for free
Turn on thread page Beta
    • Thread Starter
    Offline

    6
    ReputationRep:
    There is some sodium nitrate dissolved in water. You have to obtain the sodium nitrate. Now, I know that normally you can use evaporation to get the solute. However, sodium nitrate may explode if heated.

    We have learned about the following separation techniques:
    Filtration
    Evaporation
    Crystallisation
    Simple Distillation
    Fractional Distillation
    Separating Funnel
    Chromatography

    I thought about crystallization but don't you need a saturated solution (and therefore have to heat it to make it) for crystallization to take place. On the other hand, would chromatography separate these?

    So how can you separate the sodium nitrate from the solution?
    • Community Assistant
    • Study Helper
    Offline

    17
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by milan_tom)
    There is some sodium nitrate dissolved in water. You have to obtain the sodium nitrate. Now, I know that normally you can use evaporation to get the solute. However, sodium nitrate may explode if heated.

    We have learned about the following separation techniques:
    Filtration
    Evaporation
    Crystallisation
    Simple Distillation
    Fractional Distillation
    Separating Funnel
    Chromatography

    I thought about crystallization but don't you need a saturated solution (and therefore have to heat it to make it) for crystallization to take place. On the other hand, would chromatography separate these?

    So how can you separate the sodium nitrate from the solution?
    sodium nitrate with NOT explode when heated in solution ...
    • Thread Starter
    Offline

    6
    ReputationRep:
    (Original post by charco)
    sodium nitrate with NOT explode when heated in solution ...
    Quoting http://www.softschools.com/formulas/...e_formula/275/

    "Chemical properties: Sodium nitrate is the salt of a strong acid and hence, dissociates completely in water into sodium and nitrate ions. It is a stable solid at room temperature, however upon prolonged heating, it can explode and release toxic fumes. It is a strong oxidizer and reacts violently with strong reducing agents and flammable materials."
    • Community Assistant
    • Study Helper
    Offline

    17
    ReputationRep:
    Community Assistant
    Study Helper
    (Original post by milan_tom)
    Quoting http://www.softschools.com/formulas/...e_formula/275/

    "Chemical properties: Sodium nitrate is the salt of a strong acid and hence, dissociates completely in water into sodium and nitrate ions. It is a stable solid at room temperature, however upon prolonged heating, it can explode and release toxic fumes. It is a strong oxidizer and reacts violently with strong reducing agents and flammable materials."
    Read more carefully ...

    it is talking about solid sodium nitrate.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: November 2, 2017
Poll
“Yanny” or “Laurel”

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.