{"@context":"https://schema.org/","@type":"Quiz","dateCreated":"2026-01-10T10:01:34.675Z","dateModified":"2026-01-10T10:01:34.675Z","typicalAgeRange":"11-18","educationalLevel":"LPUNEST","assesses":"Chemistry - Some basic concepts of chemistry","educationalAlignment":[{"@type":"AlignmentObject","alignmentType":"educationalTopic","targetName":"Some basic concepts of chemistry"},{"@type":"AlignmentObject","alignmentType":"educationalSubject","targetName":"Chemistry"},{"@type":"AlignmentObject","alignmentType":"educationalExam","targetName":"LPUNEST"}],"name":"Quiz about Some basic concepts of chemistry","about":{"@type":"Thing","name":"Chemistry - Some basic concepts of chemistry"},"hasPart":[{"@type":"Question","eduQuestionType":"Multiple choice","learningResourceType":"Practice problem","educationalLevel":"intermediate","name":"Question About Some basic concepts of chemistry","text":"The pH of pure water at 25$$^\\circ$$C is:}","encodingFormat":"text/markdown","comment":{"@type":"Comment","text":"At 25\$^\\circ\$C, neutral solutions always have pH = 7."},"suggestedAnswer":[{"@type":"Answer","position":0,"encodingFormat":"text/markdown","text":"

","comment":{"@type":"Comment","text":"\"\""}},{"@type":"Answer","position":1,"encodingFormat":"text/markdown","text":"

","comment":{"@type":"Comment","text":"\"\""}},{"@type":"Answer","position":2,"encodingFormat":"text/markdown","text":"

","comment":{"@type":"Comment","text":"\"\""}},{"@type":"Answer","position":3,"encodingFormat":"text/markdown","text":"

14 \n\n

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","comment":{"@type":"Comment","text":"At 25\$^\\circ\$C, neutral solutions always have pH = 7."},"answerExplanation":{"@type":"comment","text":"Step 1: In pure water at 25\$^\\circ\$C: \\[ [\\text{H}^+] = [\\text{OH}^-] = 10^{-7}\\,\\text{M} \\] Step 2: Calculate pH: \\[ \\text{pH} = -\\log(10^{-7}) = 7 \\] Hence, pure water is neutral ."}}}]}

The pH of pure water at 25\(^\circ\)C is:

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The Correct Option is C

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