When water and chromium metal react, the chromium metal will undergo a redox reaction, releasing electrons and forming positively charged ions. The water will also undergo a reaction, producing hydrogen gas and hydroxide ions.
The reaction between water and chromium metal is exothermic, meaning it releases heat. This is because the reaction produces hydrogen gas, which is highly flammable and reacts readily with oxygen in the air to release energy.
The products of the reaction between water and chromium metal are hydrogen gas and hydroxide ions. The chromium metal will also form positively charged ions, which may form a coating on the metal surface.
The reaction between water and chromium metal will increase the pH of the solution, making it more basic. This is because the hydroxide ions produced from the water will increase the concentration of hydroxide ions in the solution, making it more alkaline.
The reaction between water and chromium metal should be conducted in a well-ventilated area, as hydrogen gas is produced which is highly flammable. Protective equipment, such as gloves and safety glasses, should also be worn to avoid contact with the reactants. It is also important to handle the chromium metal with care, as it can be toxic if ingested or inhaled.