Chemistry, 08.12.2020 17:00, tajajohn7597
To measure the amount of calcium carbonate in a seashell, an analytical chemist crushes a 4.80g sample of the shell to a fine powder and titrates it to the endpoint with 515ml of 0.140M hydrogen chloride solution. The balanced chemical equation for the reaction is:
2HCL(aq) + CO32-(aq) → H2CO3(aq) + 2Cl-(aq)
Required:
a. What kind of reaction is this?
b. If you said this was a precipitation reaction, write the chemical formula of the precipitate.
c. If you said this was an acid-base reaction, write the chemical formula of the reactant that is acting as the base.
Answers: 3
Chemistry, 22.06.2019 12:00, Unknowndragon42
Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon
Answers: 2
To measure the amount of calcium carbonate in a seashell, an analytical chemist crushes a 4.80g samp...
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