(a) (i) Ethanoic acid, CH₃COOH, reacts with ethanol to form ethyl ethanoate and water. Complete the equation for the reaction by adding the formula of ethyl ethanoate. (a) (ii) Ethanoic acid is a typical acid. State what you would see if solid calcium carbonate is added to some dilute ethanoic acid. (b) Complete the sentence by putting a cross (✗) in the box next to your answer. 1.0 dm³ of ethanoic acid solution, CH₃COOH, contains 6.0 g of ethanoic acid. (relative molecular mass: CH₃COOH = 60) The concentration of ethanoic acid, in mol dm⁻³, is A 0.1 B 0.6 C 1.0 D 10.0

GCSE Edexcel Chemistry Reactions of acids: (a) (i) Ethanoic acid, CH₃COOH,

(a) (i) Ethanoic acid, CH₃COOH, reacts with ethanol to form ethyl ethanoate and water - Edexcel - GCSE Chemistry - Question 5 - 2016 - Paper 1

Question 5

(a) (i) Ethanoic acid, CH₃COOH, reacts with ethanol to form ethyl ethanoate and water. Complete the equation for the reaction by adding the formula of ethyl ethanoa... show full transcript

Worked Solution & Example Answer:(a) (i) Ethanoic acid, CH₃COOH, reacts with ethanol to form ethyl ethanoate and water - Edexcel - GCSE Chemistry - Question 5 - 2016 - Paper 1

Step 1

(i) Complete the equation for the reaction by adding the formula of ethyl ethanoate.

96%

114 rated

Answer

To complete the equation for the reaction between ethanoic acid and ethanol to form ethyl ethanoate and water, we can write:

CH₃COOH + C₂H₅OH \rightarrow CH₃COOC₂H₅ + H₂O

Here, ethyl ethanoate is represented as CH₃COOC₂H₅.

Step 2

(ii) State what you would see if solid calcium carbonate is added to some dilute ethanoic acid.

99%

104 rated

Answer

When solid calcium carbonate (CaCO₃) is added to dilute ethanoic acid, you would see effervescence, which includes fizzing or bubbling. This occurs because the reaction produces carbon dioxide gas as one of the products, leading to the observable release of bubbles. Additionally, the solid may appear to dissolve.

Step 3

(b) Complete the sentence by putting a cross (✗) in the box next to your answer.

96%

101 rated

Answer

To find the concentration of ethanoic acid, we use the formula:

ext{Concentration (mol dm}^{-3} ext{)} = \frac{ ext{Number of moles}}{ ext{Volume (dm}^{3} ext{)}}

First, calculate the number of moles:

ext{Number of moles} = \frac{\text{mass (g)}}{\text{molar mass (g mol}^{-1}\text{)}} = \frac{6.0}{60} = 0.1 ext{ mol}

Now, as the volume is 1.0 dm³:

ext{Concentration} = \frac{0.1 ext{ mol}}{1.0 ext{ dm}^3} = 0.1 ext{ mol dm}^{-3}

Thus, the correct answer is A 0.1.

(a) (i) Ethanoic acid, CH₃COOH, reacts with ethanol to form ethyl ethanoate and water - Edexcel - GCSE Chemistry - Question 5 - 2016 - Paper 1

Worked Solution & Example Answer:(a) (i) Ethanoic acid, CH₃COOH, reacts with ethanol to form ethyl ethanoate and water - Edexcel - GCSE Chemistry - Question 5 - 2016 - Paper 1

(i) Complete the equation for the reaction by adding the formula of ethyl ethanoate.

(ii) State what you would see if solid calcium carbonate is added to some dilute ethanoic acid.

(b) Complete the sentence by putting a cross (✗) in the box next to your answer.

Join the GCSE students using SimpleStudy...