3. (a) Which of these substances is produced in the stomach to help digestion?
Put a cross (✗) in the box next to your answer - Edexcel - GCSE Chemistry - Question 3 - 2016 - Paper 1
Question 3
3. (a) Which of these substances is produced in the stomach to help digestion?
Put a cross (✗) in the box next to your answer.
A calcium oxide
B hydrochloric a... show full transcript
Worked Solution & Example Answer:3. (a) Which of these substances is produced in the stomach to help digestion?
Put a cross (✗) in the box next to your answer - Edexcel - GCSE Chemistry - Question 3 - 2016 - Paper 1
Step 1
Which of these substances is produced in the stomach to help digestion?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The substance that is produced in the stomach to aid digestion is hydrochloric acid (HCl). Hydrochloric acid helps in breaking down food and provides an acidic environment for digestive enzymes to function effectively.
Step 2
State the name of the salt formed in this reaction.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The salt formed when nitric acid reacts with magnesium carbonate is magnesium nitrate. The reaction is as follows:
ightarrow Mg(NO_3)_2 + H_2O + CO_2 $$
Step 3
Which of these is the gas produced in this reaction?
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The gas produced in this reaction is carbon dioxide (CO₂). This gas is released as magnesium carbonate reacts with nitric acid.
