What is 4.2 moles of lithium fluoride are dissolved in 200 lliliters of solution in molarity?

21 mol·L⁻¹

Step-by-step explanation:

Data:

n = 4.2 mol

V = 200 mL

Calculation:

c = moles/litres = n/V

V = 200 mL     Convert to litres

V = 200 mL ×(1 L/1000 mL)

V = 0.200 L

c = 4.2/0.200

c = 21 mol·L⁻¹

Note: This is an impossible value. Even at 100 °C, the solubility of NaF is only about 2 mol·L⁻¹.

the correct answer is:

a. formation of precipitation

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.