Some car batteries require the periodic addition of water. Does adding the water increase or decrease the battery's ability to provide electric power to start the car?

Question

Quizplus · Accepted Answer

Adding water will dilute the electrolyte solution in the battery, which will decrease the number of ions in contact with the electrodes. Since the chemical reaction that produces electricity in the battery depends on the ions present in the solution, decreasing their concentration will reduce the battery's ability to provide electrical power. Therefore, adding water will decrease the battery's ability to start the car.

Some Car Batteries Require the Periodic Addition of Water