When 0.156mol of A reacts with a stoichiometrically equivalent amount of B in a calorimeter, qcal...

Question

Question

When 0.156mol of A reacts with a stoichiometrically equivalent amount of B in a calorimeter, qcal is observed to be +219J. What is deltaHrxn below?

3A(l) + B(l) ----> 2C(s)

Answer 1

Answer #1

2C (8 + 219 J 2 mole 3 A e + Bre 3 mole i mole 0.156 mol 1 0 156 mol limiting (excess) factor. : 3 mole of il mole 3:158 a «

Answer 2

Similar Homework Help Questions

3.2 When you burn an equivalent amount of methane in the same bomb calorimeter, you notice...

3.2 When you burn an equivalent amount of methane in the same bomb calorimeter, you notice that the change in temperature is higher. Is methane or graphite a more efficient energy source? Explain your reasoning. (6pts)
When 0.231G of phosphorus reacts with chlorine to form phosphorus trichloride, in a coffee-cup calorimeter of...

When 0.231G of phosphorus reacts with chlorine to form phosphorus trichloride, in a coffee-cup calorimeter of heat capacity 216J/C, the temperature of the calorimeter rises by 11.06C. a)Provide a thermochemical equation b) Give the Enthalpy change, Change of H, for the reaction
a 2.49 g sample of cadmium metal completely reacts when placed in a coffee cup calorimeter...

a 2.49 g sample of cadmium metal completely reacts when placed in a coffee cup calorimeter that contains 75.0ml of a dilute solution of sulfuric acid ( density 1.03g/ml) to produce H2 gas and dissolved cadmium sulfate. The chemical reaction is exothermic with delta T from 21.5degrees C to 32.5C a) balanced equation- b)find enthalpy change(kJ/mol) for reaction,specific heat of reslting solution 4.18J/(gC) and assuming calorimeter is not involved in any heat exchange

(a) Draw the neutral organic product when butanone reacts with 1 equivalent of ethanol in acidic...

(a) Draw the neutral organic product when butanone reacts with 1 equivalent of ethanol in acidic solution. HCI + CH,CH,OH (5) Below. write a curved-arrow mechanism for this reaction. Each answer field should be treated as a closed system (i.e., atom conservation). Details count! Step 1. The reactants are given; add the appropriate curved arrow(s). HCl:
Draw the kinetic and the thermodynamic addition products formed when one equivalent of HBr reacts with...

Draw the kinetic and the thermodynamic addition products formed when one equivalent of HBr reacts with the following compound. Draw a single product for each. Ignore stereochemical or chiral isomers. Draw the kinetic and the thermodynamic addition products formed when one equivalent of HBr reacts with the following compound. Draw a single product for each. Ignore stereochemical or chiral isomers. kinetic product: HBr one equivalent thermodynamic product
(a) Draw the neutral organic product when butanone reacts with 1 equivalent of ethanol in acidic...

(a) Draw the neutral organic product when butanone reacts with 1 equivalent of ethanol in acidic solution. HCI +CH,CH.OH (b) Below, write a curved-arrow mechanism for this reaction. Each answer field should be treated as a closed system (.e, atom conservation). Details count Step 1. The reactants are given; add the appropriate curved arrows) ト-Cl:

A 2.490-g sample of cadmium metal completely reacts when placed in a coffee cup calorimeter that...

A 2.490-g sample of cadmium metal completely reacts when placed in a coffee cup calorimeter that contains 75.0 mL of a dilute sulfuric acid solution (aqueous) (density of 1.03 g/mL) to produce hydrogen gas and dissolved cadmium sulfate. The chemical reaction is exothermic causing the temperature of the resulting aqueous solution to change from 21.5oC to 32.5oC. Write a balanced chemical equation for the chemical reaction that occurs. Find the enthalpy change, in kJ/mol, for the chemical reaction, assuming the specific...
Draw the addition product formed when one equivalent of HCl reacts with the following diene.

Draw the addition product formed when one equivalent of HCl reacts with the following diene.
draw the neutral organic product when butanone reacts with 1 equivalent of ethanol in acidic solution.

draw the neutral organic product when butanone reacts with 1 equivalent of ethanol in acidic solution.

Draw the kinetic and the thermodynamic addition products formed when one equivalent of HBr reacts with...

Draw the kinetic and the thermodynamic addition products formed when one equivalent of HBr reacts with the following compound. (Draw a single product for each. Ignore stereochemical or chiral isomers.) netic product: H3 HBr one equivalent hermodynamic product: