In what substance will the litmus color turn red? KOH, Na2SO4, H3PO4
| March 5, 2021 | education
The color of litmus depends on whether the medium is alkaline, acidic or neutral. The red color of litmus becomes in an acidic medium, which in this problem is observed only in the case of H3PO4.
KOH – alkali, therefore the medium is alkaline, litmus color is blue.
Na2SO4 is a salt that does not undergo hydrolysis by either cation or anion, therefore the medium is neutral, and the litmus becomes violet.
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