Chemistry: In an oxidation–reduction reaction, what happens to the electrons in the oxidation process? electrons are bonded. electrons are gained. electrons are lost. electrons are replaced.

In an oxidation–reduction reaction, what happens

neerajnnp

03.06.2022

0.044 M is the molarity of 1.60 L of a solution containing 8.53 g of dissolved KBr.

Explanation:

Data given:

volume of the solution = 1.60 litres

mass of KBr = 8.53 grams

atomic mass of KBr = 119.002 gram/moles (K = 39.09 g/mole + 79.9 g/mole)

number of moles =?

molarity of KBr solution =?

First the number of moles will be calculated by using the formula:

number of moles = $\frac{mass}{atomic mass of 1 mole}$

putting the values in the equation:

number of moles = $\frac{8.53}{119.002}$

number of moles = 0.071 moles of KBr

now molarity is calculated using the formula:

molarity = $\frac{number of moles}{volume in litres}$

putting the values in the equation:

molarity = $\frac{0.071}{1.6}$

= 0.044 M

molarity of KBr solution is 0.044 M

0,0(0 оценок)