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A 0.025 m Solution of monobasic acid had a freezing point of 0.060ºC. The `pK_a` for the acid is `(K_b = 1.86` Kkg `mol^(–1)`)
A. |
1.2 |
B. |
2 |
C. |
2.5 |
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D. |
5.7 |