# Nickel in Coffee Cup Calorimeter (Small Error)

• deezer
In summary, a nickel with a weight of 28.2g was heated to 100°C, and placed in 150g of water at 13.5°C. After the nickel was placed in the water, the final temperature of the metal and water was 25°C. Using the equation Q=mcΔT, the specific heat capacity of nickel was calculated to be approximately 3.41 J/g°C. However, this value does not match the known value of 0.44 J/g°C for nickel at 25°C, suggesting a possible error in the initial water temperature or a mistake in the calculations.
deezer

## Homework Statement

nickel weights 28.2g and is heated to 100°C
150g water at 13.5°C
After the nickel is placed in the water, the final temperature of the metal and water is 25°C.
Find the specific heat capacity of nickel

Q=mcΔT

## The Attempt at a Solution

Qwater=mcΔT
=150g x 4.181J/°C x (25°C-13.5°C)
=7212.225J

Qnickel+Qwater=0
Qnickel=-Qwater=-7212.225J
mcΔT=-7212.225J
c=(-7212.225J)/(28.2g)(25°C-100°C)
=3.41 J/g°C

I googled the c value for nickel and it's 0.44 at 25 degrees Celsius. I'm not sure where I went wrong. Thanks in advance for helping

deezer said:
nickel weights 28.2g and is heated to 100°C
150g water at 13.5°C
After the nickel is placed in the water, the final temperature of the metal and water is 25°C.

Your result is consistent with these numbers - so it is either error in the book, or the question was asked by someone not knowing the real value, or you made a mistake copying the question.

Please check but I think that if the initial water temperature were 23.5° instead of the slightly odd-sounding 13.5° it comes out about right.

## What is a Nickel in Coffee Cup Calorimeter?

A Nickel in Coffee Cup Calorimeter is a type of calorimeter used to measure the change in energy or heat during a chemical reaction. It consists of a styrofoam cup, a thermometer, and a nickel metal piece.

## What is the purpose of using a Nickel in Coffee Cup Calorimeter?

The purpose of using a Nickel in Coffee Cup Calorimeter is to measure the amount of heat released or absorbed during a chemical reaction. This information can be used to calculate the enthalpy change of the reaction.

## What are the potential errors associated with using a Nickel in Coffee Cup Calorimeter?

One potential error is the heat loss to the surrounding environment, as the calorimeter is not perfectly insulated. Another error could be due to incomplete combustion of the nickel metal, leading to a lower measured change in energy.

## How can the small error in a Nickel in Coffee Cup Calorimeter be minimized?

The small error in a Nickel in Coffee Cup Calorimeter can be minimized by using a lid on the calorimeter to reduce heat loss to the environment. Additionally, using a larger mass of nickel metal and ensuring complete combustion can also help reduce the error.

## What other substances can be used instead of nickel in a Coffee Cup Calorimeter?

Other substances that can be used in a Coffee Cup Calorimeter include copper, iron, and zinc. These metals are commonly used in experiments to measure the change in energy during a chemical reaction.

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