A barium hydroxide solution is prepared by dissolving 2.32 g...

A barium hydroxide solution is prepared by dissolving 2.32 g of Ba(OH)2 in water to make 30.0 mL of solution. What is the concentration of the solution in units of molarity? concentration: The barium hydroxide solution is used to titrate a perchloric acid solution of unknown concentration. Write a balanced chemical equation to represent the reaction between barium hydroxide and perchloric acid. chemical equation: If 24.1 mL of the barium hydroxide solution was needed to neutralize a 6.62 mL aliquot of the perchloric acid solution, what is the concentration of the acid? concentration:

Transcript

00:01 Good day, the topic is about neutralization reaction.

00:04 Neutralization reaction is the reaction between an acid and a base to form salt in water.

00:09 In this problem, we are given with 2 .32 grams of barium hydroxide that is dissolved in 30ml of solution.

00:17 We wish to find the molarity of the barium hydroxide solution.

00:22 And if this barym hydroxide is made to react with perchloric acid, we wish to find the neutral or we wish to write the neutralization reaction, balance a chemical equation for the neutralization reaction between the barium hydroxide and perchloric acid.

00:39 And furthermore, we wish to find the concentration of perchloric acid if 24 .1 ml of barium hydroxide are needed in order to neutralize 6 .62 ml of sample of perchloric acid.

00:54 So to start, let us first establish the molarity of the barium hydroxide solution.

01:02 Malarity is a way of expressing concentration, which is solved as the ratio of the most of solute, which in this case, barium hydroxide and the liters of the solution.

01:16 The most being the quotient of the mass and the molar mass, given the mass, to be 2 .32 and the molar mass which we obtain as the sum of the atomic mass of all the atoms that make up the compound so we have 2 .32 over the molar mass of barium hydroxide is 171 .34 so with this we will be able to get the the most of barium hydroxide that is dissolved in the given amount of the solution so we have 0 .0135 the liters of the solution is solved from the given ml refers converting the ml into liters noting that 1 ,000 ml is equivalent to one liter so we have 30 divided by 1 ,000 that's 0 .030 liters so that's the the malarity is equal to 0 .0135 divided by 0 .030.

02:42 And that's equal to the morality of 0 .451.

02:55 Now, bioreum hydroxide is a base and perchloric acid is an acid.

03:02 So they react by a neutralization reaction to form water...

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