Chemical Forums
Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: jmg12 on March 16, 2011, 12:41:33 PM
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Which of the following common food additives would give a basic solution when dissolved in water?
A) NaNO3
B) NaC6H5CO2
C) Na2HPO4
I don't understand this section of this chapter at all.
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Me either. LOL
What is meant by a basic solution. Probably the Phosphate.
I think the others shouldn't be add to Food at all.
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this section is really frustrating...
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What do you not understand about this chapter?
A basic solution will result if a base dissolves in water. The question is simply, which one of those 3 are bases?
Also, all 3 are definitely used as food additives...
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They all come from NaOH. NaNO3 would give neutral, right? Because it is from NaOH and HNO3. And both Nac6h5co2 and Na2HPO4 would give basic because it is from a weak acid and a strong base...is there something I'm missing?
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That is correct. Although I understand the reasoning for saying that NaNO3 comes from NaOH and HNO3, I don't think you have to make it even that complicated. When a salt dissolves in water, you just simply look at the cation and the anion, and decide if they are acidic or basic. Na+ is not either, and if the anion is the conjugate base of a weak acid, then it must be at least slightly basic.
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How is it two answers? There has to be one lol. One of those two that I said is basic can't be...
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The answer is both B and C. Does the solution only have B?
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What do you not understand about this chapter?
A basic solution will result if a base dissolves in water. The question is simply, which one of those 3 are bases?
In my knowledge basic means fundamental; of or pertaining to a base, never heard the word basic in this relationship.
If we talk for solutions which has high pH we saying its alkaline or caustic solution.
if the question would be : Which of the following common food additives would give a alkaline solution when dissolved in water?
Then its easy to answer.
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Nobby - they're synonymous.
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Well, English is not my mother language so its difficult sometimes to follow.
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No it's an even question so the answer is not in the back of my textbook. I guess it's both B and C because that's the only thing that makes sense. Thanks.
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No it's an even question so the answer is not in the back of my textbook. I guess it's both B and C because that's the only thing that makes sense
I would agree with that, Only benzoate and Phosphate gave alkaline reaction ,Basic reaction LOL. ;D :P