exo and endo ka

Question 1

question 1

Answer 1

B

Question 2

question 2

Answer 2

D

Question 3

question 3

Answer 3

C

Question 4

question 4

Answer 4

D

Question 5

question 5

Answer 5

B

Question 6

question 9

Answer 6

C

Question 7

why is the reaction between sodium thiosulfate solution and dilute hydrochloric acid exothermic

Answer 7

the chemical bonds in the reactants are broken, and new bonds are formed in the products, releasing energy in the process

Question 8

effect of changing concentration of the acid on the rate of reaction using ideas about particle

Answer 8

Increasing the concentration of an acid increases the rate of reaction because it leads to more successful collisions between particles.you are also adding more acid molecule to the same volume of concentration

Question 9

balanced symbol equation between zinc and hcl

Answer 9

Zn + 2HCl → ZnCl2 + H2

Question 10

test for carbon dioxide gas

Answer 10

lime water test

Question 11

result of co2 presence in lime water

Answer 11

cloudy/milky

Question 12

effect of increasing concentration in rate of reaction

Answer 12

speeds up the reaction rate. This is because a higher concentration leads to more frequent collisions between reactant molecules

Question 13

Why is the volume of co2 of the same experiment the same

Answer 13

Same amount of reactants are being used