Please answer the questions, I'll mark you as brainliest : 7. When the pale blue composition of copper (valence II) hydroxide heats up, thermal dissolution occurs and water vapor is released.

a) ii. Write the equation for the reaction.

iii. How does the color change?

b) Mention the name of the hydroxide that doesn't decompose/dissolute when it heats up.

c) During an experiment copper nitrate and sodium nitrate were heated separately.

i. Which gas is released from both experiments?

ii. One of the nitrates also releases nitrogen dioxide; a brown-colored gas. Which one releases this gas?

iii. Write the equation for this reaction.

PS: Which term is correct in english in this case : thermal *dissolution* or thermal *decomposition*?