Figs. 1,067 to 1,079.—Willard connecting straps and connectors.
Ques. What test is necessary in preparing the electrolyte?
Ans. In mixing the water and acid, the hydrometer should be used to test the specific gravity[6] of both the acid and the solution. The most suitable acid should show a specific gravity of about 1.760 or 66° Baumé.
Ques. In preparing the electrolyte, how should the water and acid be mixed?
Ans. The mixture should be made by pouring the acid slowly into the water, never the reverse. As cannot be too strongly stated, in mixing, the liquid should be stirred with a clean wooden stick, the acid being added to the water slowly; the latter is corrosive and will painfully burn the flesh.
Distilled or rain water should be used in preparing the electrolyte. When made, the solution should be allowed to cool for several hours or until its temperature is approximately that of the atmosphere (60 being the average). At this point it should have a specific gravity of about 1.200 or 25° Baumé. If the hydrometer show a higher reading, water may be added until the correct reading is obtained; if a lower reading, dilute acid may be added with similar intent.
The electrolyte should never be mixed in jars containing the battery plates, but preferably in stone vessels, specially prepared for the purpose. Furthermore, it should never be placed in the cell until perfectly cool.
Ques. What is the effect of mixing the acid and the water?
Ans. The mixture becomes hot.
Before using, the mixture should be allowed to cool.
Ques. What kind of a vessel should be used?