D Question 10 5 pts Chromium is less active than Manganese but more active than
ID: 536537 • Letter: D
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D Question 10 5 pts Chromium is less active than Manganese but more active than Cobalt. Which of the following reactions will occur? O Mn +cr +3 +2 Mn Cr +2 +3 O Mn cr Mn Cr O co cr Co 2 Cr +3 O co cr co 2 cr+3 O co Cr Co Cr +2 +3 D Question 11 5 pts Identify the spectatorions in the reaction: Ca (NO3)2(aq) Na2CO3 (aq- CaCO3(s) 2NaNO3(aq) O All are O ca NO +2 O ca 2, CO3 O Na+, NO3 O Na+, co32 D Question 12 5 pts What are the spectator ions in the reaction HF(aq) NaOH (aq NaF(aq) H200) O H+, OH O Na+, OH O Na alone O Nat, Fr O H+, FExplanation / Answer
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11) 4th option. Na+, NO3- are the spectator ions. because the Na + ions and NO3 - ions that formed that aqeuous compound don't really do anything but switch places. They start off aqueous and end up aqueous
`12) Na+ ions alone is spectator ions. Na+ ions appers on both recatnt and products side.
16). after balancing the equation it comes as
2Al(OH)3 + 3 H2SO4>>> AI2(SO4) + 6H2O
So the answer is 6 - 4th option
17) i have used the formula M1x V1 = M2 x V2
M1 x 25= 0.20 x 15
M1= 0.12 M
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