<p>Chemical kinetics describes the chemical processes through a reaction, and the same can be mathematically written using a first-order differential equation. These equations can be solved analytically, which requires some initial conditions. Plotting the solutions of differential equations and interpreting the system related to chemical changes is an important aspect in chemistry education. Visualization of these solutions significantly enhances comprehension and makes abstract concepts more tangible for learners. In this context, XCOS, an open-source software, can be used to solve the differential equations and plot the solutions. This open-source software solves and plots linear as well as non-linear differential equations whose analytical solution may not be available. XCOS is particularly beneficial for complex chemical systems where traditional methods fall short. The article highlights how we have solved and visualized differential equations for chemical phenomena using XCOS. Various parameters intrinsic to these chemical phenomena, such as reaction rates and initial concentrations, were altered to study their impact on the system. This dynamic approach facilitated a comprehensive exploration of the chemical processes under consideration, including reversible and biochemical reactions. We have tried to understand the rapid and steady state equilibrium using the XCOS tool by converting the chemical phenomena into inquiry-based learning. In a three-part series, this article focuses on single-step chemical kinetics and the application of XCOS to solve and plot the solution of differential equations involving these reactions.</p>