Zinc metal reacts with hydrochloric acid according to the following balanced equation.Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g)When 0.111 g of Zn(s) is combined with enough HCl to make 53.8 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 22.0 ∘C to 24.0 ∘C.Find ΔHrxn for this reaction as written. (Use 1.0 g/mL for the density of the solution and 4.18 J/g⋅∘C as the specific heat capacity.)

Question
Asked Jan 16, 2019

Zinc metal reacts with hydrochloric acid according to the following balanced equation.
Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g)
When 0.111 g of Zn(s) is combined with enough HCl to make 53.8 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 22.0 ∘C to 24.0 ∘C.
Find ΔHrxn for this reaction as written. (Use 1.0 g/mL for the density of the solution and 4.18 J/g⋅∘C as the specific heat capacity.)

check_circle

Expert Answer

Step 1

Given the density and volume of the solution, mass of the solution can be calcuated as:

fullscreen
Step 2

Heat released in the reaction when 1 mole of Zn reacts is given as:

fullscreen
Step 3

Number of moles of z...

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: When 1.623 x 10-2 mol of NH3 and 1.623 x 10-2 mol of O2 are introduced into a 2.035 L reaction vesse...

A: The initial concentration of ammonia and oxygen are calculated as,

question_answer

Q: 2eo H H. H HSDar H2SO4 HT HO 2ea H leg LDA/-78°C H

A: Aldol Condensation: An organic reaction in which enolate ion reacts with a carbonyl compound to form...

question_answer

Q: Compare the stability of primary, secondary and tertiary carbocation.

A: Primary (1°) carbocation: Carbocation contains two hydrogen atoms and attached to only one carbon at...

question_answer

Q: difference between SN1 and SN2?

A: SN1SN2The rate of reaction is unimolecular.The rate of reaction is bimolecularIt is a two-step mecha...

question_answer

Q: Which one of the following compounds undergoes electrophilic aromatic sulfonation at the fastest rat...

A: With suitable electrophile, aromatic compound undergoes electrophilic substitution reaction.Sulfur t...

question_answer

Q: Calculate the equilibrium constant for the following reaction at 25o C, given that change in standar...

A: Given:The free energy change is 163.4 kJ/mol.Temperature = 250C = 25 + 273 K = 298 K. 

question_answer

Q: Which of the following statements is incorrect:   1. the combination of two s orbitals gives bond...

A: In the chemical bonding, an antibonding molecular orbital is a type of molecular orbital that has th...

question_answer

Q: Would the acid chloride add ortho para or meta?

A: The product formed in the aromatic electrophilic substitution depends upon the type of substituent a...

question_answer

Q: Calculate the boiling point of a 1.75 m Mg(NO3)2 aqueous solution.

A: The boiling point elevation is given by