common household indicators of acid base
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Using a pH-meter the measurement is more accurate and sure.But at home you can use a pH-paper for transparent liquids.
Household bleach is a strong alkaline solution, making it difficult to accurately measure its pH using universal indicator. Universal indicator is more suited for measuring pH in the neutral to slightly acidic range, and may not provide an accurate or precise reading for highly alkaline substances like bleach. A pH meter or specific alkaline pH indicator may be more suitable for measuring the pH of household bleach.
red cabbage is a good indicator
Dilute Household Ammonia or just normal ammonia would do the job.
A household indicator product is a device that monitors the status or performance of something in the household, such as a smart thermostat that indicates energy usage or a water leak detector that alerts you to leaks in the plumbing system.
The pH of the base ammonia is, depending on its concentration between 11.1 (0.1M) and 12.1 (10M) so the color of the most common Yamada's Universal Indicator will be purple (or blue if pH < 11, ready to use household ammonia)
Household bleach is a strong base, typically with a pH of around 11-13, which is outside the color range of universal indicator, making it difficult to accurately measure its pH using this indicator. Universal indicator is more useful for measuring pH in the neutral to slightly acidic range. To accurately measure the pH of bleach, a pH meter or pH paper with a broader range would be more suitable.
Methyl red is an adequate indicator.
With indicator papers the pH of a liquid is evaluated. Also many indicator papers are used for testing chemicals.
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Oxalic acid,sodium oxalate or ammonium iron (II) sulfate.