Hess's Law

Hess's Law

11th Grade

8 Qs

quiz-placeholder

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Hess's Law

Hess's Law

Assessment

Quiz

Science

11th Grade

Medium

NGSS
HS-PS1-4

Standards-aligned

Created by

Richard Good

Used 33+ times

FREE Resource

8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Use the information in the image to answer this question.


The standard enthalpy of combustion of butane, in kJ mol−1, is

−2880

−2590

−806

−554

Tags

NGSS.HS-PS1-4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Use the information in the image to answer this question.


The value in kJ mol−1 of the enthalpy of thermal dissociation when butane forms propane, hydrogen and carbon is

−26.3

−17.5

+17.5

+21.2

Tags

NGSS.HS-PS1-4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Use the information in the image to answer this question.


The value in kJ mol−1 for the enthalpy of combustion of propane is

−211.7

−419.7

−2220

−2878

Tags

NGSS.HS-PS1-4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Using the data below, which is the correct value for the standard enthalpy of formation for TiCl4(l)?

−1538 kJ mol−1

−1094 kJ mol−1

−750 kJ mol−1

+286 kJ mol−1

Tags

NGSS.HS-PS1-4

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The enthalpies of combustion of C(s), H2(g) and C4H9OH(l) (in kJmol-1) are as follows  
C(s) + O
2(g)   ->  CO2(g)  
                                             ∆H=a
H2(g) + ½O2(g)   ->   H2O(l)                                        ∆H=b
C4H9OH(l) + 6O2(g)   ->   4CO2(g) + 5H2O(l)  ∆H=c
What is the enthalpy change for the reaction shown below?
  4C(g) + 5H2(l) + ½O2(g)   ->   C4H9OH(l)
c – 4a – 5b
2a + 10b - c
4a + 5b - c
2a + 5b + c

Tags

NGSS.HS-PS1-4

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

(Hess's Law)Calculate the ∆H for the following reaction: 2H2O  2H2O  + 1 O2 
You are given these two equations:
2H+  O2  2H2O            ∆H  =  -572 kJ
H2  +  O2    H2O2            ∆H  =  -188 kJ 
∆H  =  -948 kJ 
∆H  =  -196 kJ 
∆H  =  -384 kJ 
∆H  =  -188 kJ 

Tags

NGSS.HS-PS1-4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When you multiply a chemical equation by 2, what is done to the heat of reaction?

multiplied by 1/2

multiplied by 2

nothing

Tags

NGSS.HS-PS1-4

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When you flip a chemical reaction using Hess's Law, what is done to the heat of reaction value?

nothing

the sign is flipped

1/delta H

Tags

NGSS.HS-PS1-4