The reaction is:
Na2CO3 + 2HCl = 2NaCl + CO2 + H2O The net ionic is
CO32- + 2 H+ = H2O + CO2
Na2CO3 + 2HCl -> 2NaCl + CO2 + H2O
71.4mL of 1.75 M hydrochloric acid must be diluted with water to prepare 0.500 L of 0.250 M hydrochloric acid.
Being exothermic relates to a reaction of two substances which give out heat to the surroundings. As such, hydrochloric acid can't be exothermic by itself. If you add concentrated hydrochloric acid to water, however, heat is generated in the reaction which is one of the reasons why hydrochloric acid should only be diluted in this way (acid added to water, not the other way round) otherwise the solution can quickly and violently boil over and cause acid and heat burns to anything it touches.
to diluted the substance that present in the urine
YES my science book says so it has components of salt and hydrochloric acid is found in both. your welcome...very,very welcome.Vinegar contain:Ethanoic Acid (syn.: acetic acid, with the chemical formula CH3COOH)no hydrochloric acid HCl !
Na2CO3 + 2HCl -> 2NaCl + CO2 + H2O
71.4mL of 1.75 M hydrochloric acid must be diluted with water to prepare 0.500 L of 0.250 M hydrochloric acid.
Bubbles are present. Heat is evolved since it is exothermic reaction.
yes. it contains very diluted hydrochloric acid.
Hydrochloric acid diluted in water is still an acid.
I think you must mean aqueous HCl, which is aqueous hydrochloric acid, meaning the hydrochloric acid has been diluted with water.
One use, in its diluted form, is a cleaner/sterilizer.
Being exothermic relates to a reaction of two substances which give out heat to the surroundings. As such, hydrochloric acid can't be exothermic by itself. If you add concentrated hydrochloric acid to water, however, heat is generated in the reaction which is one of the reasons why hydrochloric acid should only be diluted in this way (acid added to water, not the other way round) otherwise the solution can quickly and violently boil over and cause acid and heat burns to anything it touches.
to diluted the substance that present in the urine
Technically, a compound. This is such a strong acid that it is almost always diluted and thus a mixture.
"Chemical word equation" is apparently some kind of "New Chemistry" analogous to the "New Math" of the 1960s and 1970s. Frankly, I'd say you just wrote one when you were typing out the question. If you want the real equation a sensible chemist would use, it's 2 HCl + Mg(OH)2(s) -> 2 H2O + MgCl2(aq)
Use diluted hydrochloric acid (pool acid) and scrub the pavers. It should reduce most of the color distortion.