Friday, March 24, 2017
Monday, March 6, 2017
Chemistry Summative
Observation
Reactants: AgNO3 + K2CrO4
The potassium chromate in it’s liquid is a yellow, translucent and soluble.
The silver nitrate in it’s liquid form is a clear and translucent.
Reaction:
The reaction happened instantly after a drop of silver nitrate was added into the potassium chromate . The silver nitrate turn into a brownish-red opaque solid inside the potassium.
Product:
The silver chromate is brownish-red opaque solid
The potassium nitrate is clear and translucent liquid
After Reaction:
After 12 hours the silver chromate would sink to the bottom and the potassium nitrate would be at the top.
Conclusion and Analysis
Type of Change:
The chemical change
Balance Equation:
It is a double replacement reaction
AgNO3 + K2CrO4 ---> AgCrO4 + K2NO3
- It is a mechanical mixture because we can clearly still see the brownish-red substance inside the clear translucent liquid
-It is a double replacement reaction because the potassium wants to lose an electron while the nitrate wants to gain an electron
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