Practise 薬剤師国家試験 with a short sample and answer explanations. These are independent learning materials, not official exam questions or a pass prediction.

Exam outline and official sources

厚生労働省 — Ministry of Health, Labour and Welfare, Japan · Verified as of 2026-10-11 Asia/Hong_Kong. The workbook label 'Japan National Pharmacist Examination' maps to the official 薬剤師国家試験; the assigned slug is preserved. Applicable outline: 薬剤師国家試験出題基準, finalized 2016-11-22 and effective from the 106th examination in fiscal 2020, held in February 2021. The current 112th examination notice, dated 2026-08-28, retains the seven-subject structure. The 2026 revision proceedings schedule a replacement outline for examinations from fiscal 2029; that future outline is not used here.

This original 20-question sample covers selected topics across the outline. It does not reproduce official exam questions or cover every tested topic.

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薬剤師国家試験

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An ideal dilute solution contains a monoprotic weak acid HA with pKa 5.0. Its measured pH is 6.0. Assuming activity coefficients are approximately one, what is the ratio [A−]/[HA]?

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