Acid + Carbonate = what reaction?

A. Carbonate is CO₃^-2 and will react with acids to give off carbon dioxide (CO₂), leaving the acid salt of the original carbonate salt.

A. I think Mr. Crichton already answered that question, Tina. That's a hint, but if it's not clear enough, please try to recast your question in terms of his answer, and we can help you through what you aren't understanding.

A. Hi, Freddie. If you give us an unbalanced equation, I'll be happy to balance it for you and explain how it's done. But teachers frequently ask us not to do students' homework assignments here. In fact you teacher wrote: "Tell Freddie to do his own homework!" :-)

You have to know what acid you are using before the equation can be balanced.

Regards,

A. Acid + carbonate => carbon dioxide + salt + water

When carbon dioxide reacts, bubbles fizz and lime water will turn cloudy. These are evidence of carbon dioxide reacting in a solution

A. Hi, Chen.

Yes, there is such a thing as gold chloride, and silver chloride is a commonplace. But that does not mean that hydrochloric acid will dissolve gold ... it only means that there is some way or other to make gold chloride. Although you can write this balanced equation:
2HCl + Au => H₂ + AuCl₂
... that doesn't mean that the reaction will actually proceed :-)

A balanced equation "balances", but the fact that it would balance IF it happened doesn't necessarily drive it towards happening. Only aqua regia (HCl + HNO₃) will dissolve gold. Good luck.

Regards,

A. Yes,
Acid + Base --> Salt + Carbon dioxide + water

A. Hi Ernest.

Noble gases

It would not further your education for someone to simply answer your question as written, but I can tell you that you can look up "noble gases" and then you'll not only find the answer, you'll know why the answer is what it is. Good luck.

Regards,

Hi Lola. Serena from Auckland has answered that question. Please read and try to understand what she said. Good luck.

Regards,

A. It is basically an acid-base reaction, i.e., water and a salt are formed.

So, one product would be CaCl₂ The other product is what is left over. 2HCl + CaCO₃ = CaCl₂ + H₂CO₃.
That product breaks down into water and carbon dioxide gas.

So, you will see a gas evolution. Also another indication that a reaction has taken place is the solution will be warmer.

Check out a chemistry book from your library. This reaction will be in most books. Also you will learn a lot about chemical reactions.

A. Lola,
Look up calcium carbonate on wikipedia, this is a basic reaction and is listed in their examples.

A. Lola, I think the question you are asking is how can you tell when a chemical reaction takes place. This is not always easy, because many reactions take place but do not show any visible signs of them happening. However, in the case of hydrochloric acid and calcium carbonate, the reaction is easy to see because the calcium carbonate starts to fizz and release a gas (carbon dioxide); the calcium carbonate also starts to dissolve in the acid. Normally, calcium carbonate is not soluble in water, but when it is reacted with hydrochloric acid it forms calcium chloride, which is soluble. The overall reaction is:

calcium carbonate + hydrochloric acid = calcium chloride + carbon dioxide + water

Hopefully this answers your question and makes sense to you.

A. Hi Lisa.

When you're trying to learn, you must understand the meaning of a question before you ask it. It's fine to ask "What is the volume of a baseball in cubic centimeters?" because you understand the question and are just looking for the answer. But it is no good to post "What is the volume of a baseball in cubic parsecs?" if you don't know what a parsec is because then you don't understand the question. (The volume of a baseball in cubic parsecs is a very small number by the way).

In view of the several previously well answered questions, it sounds like you might be stringing words together that you don't really understand yet. So what exactly does the phrase "What is the chemistry of?" mean to you? Good luck.

Regards,

Hi Rebecca. You'd like someone to describe this for you in your own words?  :-)

Regards,

A. Ooh...homework! Pity you didn't even attempt to disguise the question, but have asked it exactly as written either on the teacher's board or the text book!

Anyway, may I suggest you start by googling some of the terms in your question. Put in Enthalpy and you will get millions of hits.

Alternatively try your local library. Search for Enthalpy and possibly calorimeters and you should be on your way.

A. Hi Jessica.

James Watts, above, gave the equation for a rather similar question involving Calcium Carbonate rather than Sodium Carbonate as:

The valence of Na is +1 whereas the valence of Ca is +2, so let's try:

So what you were told in school seems more accurate than what is written in your assessment book.

Regards,

A. Dear Jessica,

One molecule of water is the byproduct of the reaction of two molecules of hydrogen chloride and one sodium carbonate. If you look at the reaction:

Na₂CO₃ + 2 HCl --> 2 NaCl + CO₂ + H₂O

But as this reaction occurs in a water matrix, the extra molecule of water is insignificant almost every time.

Hope you could solve your issue! Regards,

A. Your school answer is the most correct. Some places do not consider the formation of more water in a water solution to be an important "product". But, you cannot balance the equation without it.