Question

Including the chloride contributed by the cobalt(ii) chloride hexahydrate, determine the total molarity of chloride in the reaction solution. assume a concentration of 12.1 m for the concentrated hydrochloric acid solution. neglect reaction with cobalt(ii) and just consider dilution. enter your response in moles per liter (m) without units to the nearest 0.01 m.

a) 11.5 m
b) 9.7 m
c) 8.3 m
d) 10.8 m

Answer 1

Without specific details about the moles of cobalt(ii) chloride hexahydrate or the volumes used, the exact total molarity of chloride in the solution cannot be determined. Normally, you would sum the molarity from both sources to find the total molarity.

Step-by-step explanation:

The total molarity of chloride in the reaction solution can be calculated by considering the concentration of chlorides coming from both the cobalt(ii) chloride hexahydrate and the concentrated hydrochloric acid. However, the exact molarity cannot be determined without knowing the amounts or volumes used in the solution from the provided information.

To calculate the total chloride molarity, it would be necessary to know the amount (in moles) of cobalt(ii) chloride hexahydrate added to the solution, as each mole of CoCl₂·6H₂O provides two moles of chloride ion. The amount of chloride from hydrochloric acid would simply be the molarity of the HCl solution multiplied by its volume in liters. Summing both contributions would give the total molarity of chloride.