Use the equation that follows for parts (a) and (b) below. Molecular masses are under each salt/molecule.\[\text{Al}_2\text{O}_3 (s) + 6 \text{NaOH} (l) + 6 \text{HF} (g) \rightarrow 2 \text{Na}_3\text{AlF}_6 (s) + 6 \text{H}_2\text{O} (g)\]\[101.96 \quad 40.00 \quad 20.01 \quad 209.95 \quad 18.02\]Part a) How many grams of aluminum oxide are needed to react with 3.5 L of HF at 305 K, 4.2 atm pressure in the presence of excess NaOH?Part b) How much energy is released from the reaction of 56.0 g of HF? Assume that \(\Delta H\) for the reaction is -345 kJ.

Given information: Volume of HF = 3.5 L Temperature = 305 K pressure = 4.2 atm ∆H=-345 kJ The…

Use the equation that follows for parts (a) and (b) below. Molecular masses are under each salt/molecule. Al2O3 (s) + 6 NaOH (4 + 6 HF (g)→ 2 NasAlF6 (s) + 6 H2O (g) 101.96 40.00 20.01 209.95 18.02 Part a) How many grams of aluminum oxide are needed to react with 3.5 L of HF at 305 K, 4.2 atm w w pressure in the presence of excess NaOH? wwwwm Part b). How much energy is released from the reaction of 56.0 g of HF? Assume that H for the reaction is -345 kJ.

Use the equation that follows for parts (a) and (b) below. Molecular masses are under each salt/molecule. Al2O3 (s) + 6 NaOH (4 + 6 HF (g)→ 2 NasAlF6 (s) + 6 H2O (g) 101.96 40.00 20.01 209.95 18.02 Part a) How many grams of aluminum oxide are needed to react with 3.5 L of HF at 305 K, 4.2 atm w w pressure in the presence of excess NaOH? wwwwm Part b). How much energy is released from the reaction of 56.0 g of HF? Assume that H for the reaction is -345 kJ.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

Use the equation that follows for parts (a) and (b) below. Molecular masses are under each salt/molecule.

\[
\text{Al}_2\text{O}_3 (s) + 6 \text{NaOH} (l) + 6 \text{HF} (g) \rightarrow 2 \text{Na}_3\text{AlF}_6 (s) + 6 \text{H}_2\text{O} (g)
\]

\[
101.96 \quad 40.00 \quad 20.01 \quad 209.95 \quad 18.02
\]

Part a) How many grams of aluminum oxide are needed to react with 3.5 L of HF at 305 K, 4.2 atm pressure in the presence of excess NaOH?

Part b) How much energy is released from the reaction of 56.0 g of HF? Assume that \(\Delta H\) for the reaction is -345 kJ.

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