# Problem: The reaction of  WCl6 with Al at ~400 °C gives black crystals of a compound containing only tungsten and chlorine. A sample of this compound, when reduced with hydrogen, gives 0.2232 g of tungsten metal and hydrogen chloride, which is absorbed in water. Titration of the hydrochloric acid thus produced requires 46.2 mL of 0.1051 M NaOH to reach the end point. What is the empirical formula of the black tungsten chloride?

###### FREE Expert Solution
89% (410 ratings)
###### Problem Details

The reaction of  WCl6 with Al at ~400 °C gives black crystals of a compound containing only tungsten and chlorine. A sample of this compound, when reduced with hydrogen, gives 0.2232 g of tungsten metal and hydrogen chloride, which is absorbed in water. Titration of the hydrochloric acid thus produced requires 46.2 mL of 0.1051 M NaOH to reach the end point. What is the empirical formula of the black tungsten chloride?

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Solution Stoichiometry concept. You can view video lessons to learn Solution Stoichiometry Or if you need more Solution Stoichiometry practice, you can also practice Solution Stoichiometry practice problems .

What is the difficulty of this problem?

Our tutors rated the difficulty of The reaction of  WCl6 with Al at ~400 °C gives black crystal... as high difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Dasha took 13 minutes to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Razunguzwa's class at GWU.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in . You can also practice practice problems .