give the examples for the following chemical reactions change in state change in colour evolution of gas change in temperature
Answers
example of the reaction change in state is that when the the zinc granules and dilute sulphuric acid shows their characteristics the both can added to each other then what the product will be given this is our reaction as same as that change in colour the chemical reaction between sulphur dioxide is acidified potassium dichromate solution is characterized why change in colour from Orange to Green next is evolution of gas when dilute sulphuric acid reacts with zinc then in the products we get the hydrogen gas hydrogen gas will be evolved and next is change in temperature the chemical reaction between quicklime and water to form slaked lime is characterised by change in temperature which is rise in temperature the reaction between quicklime and water to form slaked lime in is an exothermic reaction which means that heat producing reaction you can also perform this reaction by taking quicklime in hard glass beaker and water add water to it slowly don't touch the bigger because it is quite hot and its temperature is also very high