how to solve for reaction time

Heating is continued for 8-10 hours. During this time haematite oxidises the impurities like carbon, silicon, sulphur and phosphorus. Carbon is removed as carbon monoxide, sulphur as sulphur dioxide, silicon as silica and phosphorus is oxidised to its pentoxide. These oxides react with li..

Rate of a Reaction - Rate of reaction basically means the speed at which a chemical reaction occurs. The speed of a reaction is determined by monitoring the concentrations of the reactants or products at intervals of time. The volume of the rea..

takes place only in the presence of sunlight. In this reaction, the light energy from the sun is absorbed by the photosynthetic pigments and is used to break down the water molecules. This is called the photolysis ('photo' is light and 'lysis' refers to break down) of water. This rele..

First Order Reaction - Example 5: Cyclopropane (C 3 H 6 ) at room temperature has a ring structure. When it is heated, the ring opens up and cyclopropane isomerizes to propylene. The reaction takes place in a first order manner. Therefore, the rate law for the reaction..

The rate of a reaction is broadly defined as the speed with which the reactants are converted into products. This can be determined both quantitatively and qualitatively. Qualitatively, (concerned with or depending on constitiuents) an idea about the rate of a reaction can be o..

F.F. Blackman (1905) demonstrated the presence of the dark reactions for the first time. It utilises the chemical energy temporarily stored in the products of light reaction. It is also called the Calvin cycle. It is a series of reactions taking place in a c..

It is a common observation that most of the reactions when carried out in closed vessels do not go to completion, under a given set of conditions of temperature and pressure. Infact in all such cases, in the initial state, only the reactants are present but as the reaction proce..

Half Life of a Reaction - Half life of a reaction is defined as the time required for reducing the concentration of a reactant to half its initial value. It is denoted as t 1 / 2 . As discussed before, the t 1 / 2 of a zero order reaction is given as In gener..

Half life of a reaction is defined as the time required for reducing the concentration of a reactant to half its initial value. It is denoted as t 1 / 2 . As discussed before, the t 1 / 2 of a zero order reaction is given as In general, for a reaction of orde..

The concentration ratio, i.e., the ratio of the product of concentration of the products to that of the reactants at any time (t) is known as the concentration quotient 'Q' of the reaction at time (t). The value of Q c or Q p will be different from the value of..