Chemistry College

21.10g of NaOH and Ba3(OH)2 mixture is dissolved water to prepare 1.0dm³ Solution. To neutralize 25.OO mL of this solution needs 0.5 moldm-³ HCl 15.00mL. calculate the percentage of NaOH by mass in the mixture.​

Answers

Answer 1

From the equation of te reaction, we know that the mass percent  of NaOH in the mixture is 1.4%.

What is neutralization?

Neutralization is a reaction that occurs between an acid and a base to yield salt and water only.

In tis case, the reaction of the NaOH and HCl occurs as follows; NaOH + HCl ----> NaCl + H2O

Number of moles of HCl reacted = 15/1000 * 0.5 moldm-³ = 0.0075 moles

Since the reaction is 1:1, 0.0075 moles of NaOH reacted.

Mass of NaOH =  0.0075 moles of NaOH * 40 g/mol = 0.3 g

Percent of NaOH = 0.3 g/21.10g * 100/1 = 1.4%

Learn more about percent concentration: https://brainly.com/question/202460

Related Questions

what happens when ethanol reacts with alkaline potassium permanganate?​

Answers

Answer:When ethanol is oxidised with alkaline potassium permanganate (alkaline KMnO 4) or acidified potassium dichromate (acidified K 2 Cr 2 O 7), ethanoic acid is formed. Alkaline potassium permanganate and acidified potassium dichromate are strong oxidising agents, as they provide oxygen for oxidising other substances in the reaction

Explanation:

When ethanol is handled with alkaline potassium permanganate, alkaline potassium permanganate reacts the ethanol to generate ethanoic acid.

particles in the liquid state have _________ IM attractive forces than in the gas state

Answers

Answer:

Particles in the liquid state have greater IM attractive forces than in the gas state.

Please help!

A molecule that is either cycloheptane or cycloheptene is treated with bromine and the sample immediately absorbs the red bromine color—which compound is present?

Answers

The compound that is most likely present when treated with bromine and the sample absorbs the red bromine color is ; Cycloheptene

What is cycloheptene

Cycloheptene is an unsaturated colorless oily liquid which is insoluble in water it absorbs Bromine when used in performing unsaturation test due it unsaturated nature.

The red bromine color will be absorbed when used to treat Cycloheptene but will not be absorbed when used to treat cycloheptane due to its saturated nature.  

Hence we can conclude that the compound that is present is Cycloheptene.

Learn more about Unsaturation : brainly.com/question/561845

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