43.84 ml of 0.175 molar sodium hydroxide were used to neutralize 0.634 grams of an unknown acid. What is the equivalent wt. of the acid?
回答 (1)
2016-02-22 5:18 pm
Number of moles of NaOH
= 0.175 × (43.84/1000)
= 0.007672 mol
1 mole of NaOH dissociates to give 1 mole of hydroxide ions.
Number of equivalents of NaOH
= 0.007672
Number of equivalents of the acid
= Number of equivalents of NaOH
= 0.007672
Equivalent weight of the acid
= 0.634 / 0.007672
= 82.6
= 0.175 × (43.84/1000)
= 0.007672 mol
1 mole of NaOH dissociates to give 1 mole of hydroxide ions.
Number of equivalents of NaOH
= 0.007672
Number of equivalents of the acid
= Number of equivalents of NaOH
= 0.007672
Equivalent weight of the acid
= 0.634 / 0.007672
= 82.6
收錄日期: 2021-04-18 14:35:18
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