The formula of washing soda is:
Correct answer: D. Na2CO3 . 10 H2O
- A. N2CO3
- B. Na2CO3 . H2O
- C. Na2CO3 . 7H2O
- D. Na2CO3 . 10 H2O
Explanation
Sodium carbonate decahydrate (Na2CO3·10H2O), also known as washing soda, is the most common hydrate of sodium carbonate containing 10 molecules of water of crystallization.Use the image below to help recall.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Periodic Properties and Trends questions
The chemical formula of chromyl chloride gas is?
Aqua regia can dissolve noble metal due to the formation of:
Which of the following is not the use of bleaching powder?
P2O5 is Hygroscopic powder which sublimes at:
The binding energy of transition metal increases upto group:
In Contact Process arsenic impurities act as poison for: