Answer :
Alka-seltzer in an antacid that contains a mixture of sodium bicarbonate and citric acid. When the tablet is dissolved in water, the reactants which are in solid form in tablet become aqueous and react with each other.
During this reaction, Carbon Dioxide gas is evolved which causes the reaction mixture to fizz. The equation is given below.
[tex] NaHCO_{3}\ (aq) + H_{3}C_{6}H_{5}O_{7} (aq)\rightarrow Na_{3}C_{6}H_{5}O_{7}(aq)+ CO_{2}(g)+H_{2}O (l) [/tex]
Rate of the above reaction is affected by the Temperature.
As the temperature increases , the rate of the reaction increases. This happens because at higher temperature, the collisions between reacting species are more which result in formation of product in less time. This increases the rate of reaction.
We have been given equal volumes of water for each beaker. But the temperature of beaker c is 80°C which is the highest temperature. That means the reaction in beaker c is fastest.
Whereas beaker a is at lowest temperature (30°C) , therefore the reaction in beaker a would be slowest .
Therefore the answer that correctly orders the reaction rates from fastest to slowest reaction is beaker c > beaker b > beaker a
Final answer:
The correct order of reaction rates from fastest to slowest is beaker C > beaker B > beaker A, since higher temperatures increase the reaction rates of chemical reactions.
Explanation:
Alka-seltzer in an antacid that contains a mixture of sodium bicarbonate and citric acid. When the tablet is dissolved in water, the reactants which are in solid form in tablet become aqueous and react with each other.
During this reaction, Carbon Dioxide gas is evolved which causes the reaction mixture to fizz. The equation is given below.
NaHCO_(3)\ (aq) + H_(3)C_(6)H_(5)O_(7) (aq)\rightarrow Na_(3)C_(6)H_(5)O_(7)(aq)+ CO_(2)(g)+H_(2)O (l)
Rate of the above reaction is affected by the Temperature.
In the experiment with three Alka-Seltzer tablets being dissolved in water at different temperatures, the correct order of reaction rates from fastest to slowest would be beaker C > beaker B > beaker A. This is because chemical reactions, including those involving sodium bicarbonate and citric acid found in Alka-Seltzer to form carbon dioxide, water, and sodium citrate, typically occur faster at higher temperatures. Hence, the tablet in beaker C with 80° C water will react the fastest, and the tablet in beaker A with 10° C water will react the slowest.
