The reaction between zinc and hydrochloric acid is Zn + HCl = H2 + ZnCl2. It is a single replacement reaction where zinc metal displaces the hydrogen to form hydrogen gas and zinc chloride, a salt.Know More
Zinc reacts quickly with the acid to form bubbles of hydrogen. Carrying out the experiment in a closed sidearm flask allows collection of the gas in a balloon. Exposing the balloon to the heat of a lighted candle causes a rapid reaction, as the hydrogen reacts with oxygen to form water.
The zinc and hydrochloric acid reaction is an example of oxidation-reduction. The zinc metal begins the process as a pure metal with an ionic charge of zero and loses an electron as it reacts with the acid to become a positively charged zinc ion through oxidation. At the same time, hydrogen undergoes reduction by gaining an electron to become a neutral molecule.
Zinc is an important nutrient for animals and crops, including rice. In an application of the zinc and hydrochloric acid experiment, scientists have suggested adding weak hydrochloric acid to irrigation water. The acid reacts with zinc metal, found in the soil, to form zinc ions in a type the plant is able to use to improve crop yields.Learn more about Solutions & Mixtures
Copper doesn't dissolve in hydrochloric acid because it does not oxidize easily and has a positive reduction potential, making it fairly unreactive. Copper is also a noble metal, the series of metals which are not affected by non-oxidizing acids.Full Answer >
The reaction between KHP and NaOH is shown by the balanced equation KHC8H4O4 + NaOH = NaKC8H4O4 + H2O. KHP stands for potassium hydrogen phthalate, which has the chemical formula KHC8H4O4.Full Answer >
A substance that slows or prevents a chemical reaction is called an inhibitor or a negative catalyst. It is the opposite of a catalyst, which is a substance that increases the rate of a reaction.Full Answer >
Aluminum chloride and water react to form aluminum hydroxide and hydrochloric acid. However, the reaction is exothermic when there is much more aluminum chloride than water, thus dropping a small amount of water on to solid aluminum chloride creates hydrogen chloride gas, a toxic substance that corrodes certain metals. When aluminum chloride is placed in enough water, the reaction cools, and the ions dissolve in water.Full Answer >