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Date: 24-6-2017
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Date: 23-1-2017
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Stoichiometry of Reactions in Solution
Stoichiometric calculations involving solutions of specified molar concentration are usually quite simple since the number of moles of a reactant or product is simply volume × molar concentration.
Example 1
What volume of 1.40 M H2SO4 is needed to react exactly with 100 g of aluminum according to the Equation
First calculate the number of moles of Al, then moles of H2SO4 needed and then the volume of H2SO4
solution required:
Example 2
40.0 mL of an H2SO4 solution was titrated with 0.215 M NaOH. 35.26 mL of base was required to
exactly neutralize H2SO4. What was the concentration of the acid?
The titration reaction,
shows that 2 mol NaOH are needed to react with 1 mol H2SO4. Thus,
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بأدلة علمية.. غذاء فائق يمكن أن يحد من خطر الإصابة بالسرطان
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الولايات المتحدة.. التحقيق في حوادث غير مبررة تورطت بها سيارات ذاتية القيادة
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شعبة الخطابة الحسينية النسوية تحيي ذكرى زواج النورين
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