Chapter 7 Problems Directions: Work each of the following problems and submit yo

Question

Chapter 7 Problems Directions: Work each of the following problems and submit your answers. 1. If a solution of HCl is mixed with a solution of NaOH in a calorimeter, the temperature of the 250 grams of solution increases from 15C to 35C. If the specific heat of the solution is 1.0 cal/gC, what quantity of heat is involved in the reaction? 2. Five grams of glucose was burned in a bomb calorimeter. The temperature of 2500 grams of water was raised from 30C to 45C. Calculate the fuel value (energy) of the glucose. The specific heat of water is 1.0 cal/gC 3. Write the rate equation for the following: A. N +O2 NO B. CH +20CO +2 HO 2 2 4. Write an equilibrium equation for the following: A. H+F2HF B. MnO + 4 HCl MnCI +CI +2 HO 5. Determine the equilibrium constant for the following reaction if [HI)-0.54 M. [H]- 1.72 M. and [I] 2.72M 2 HI H +I

Explanation / Answer

1) heat involved = mCp ?T = 250*1*(35-15) = 500 cal

2) energy used= mcp? T

= 2500*1*(45-30) = 37500 cal

This is for 5 gm so for 1 gm = 37500/5 = 7500 J /g

As per chegg rules only 1 or 2 questions to be answered once

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