Problem: A solution is made by mixing 15.0 g of Sr(OH)2 and 60.0 mL of 0.210 M HNO3.You may want to reference (Pages 149 - 153) Section 4.6 while completing this problem.Is the resultant solution acidic or basic?

FREE Expert Solution

Balanced equation: Sr(OH)2 (aq) + 2HNO3 (aq) → Sr(NO3)2 (aq) + 2H2(l)


Mole to mole comparison:

  • 1 mole Sr(OH)2 reacts with 2 moles HNO→ so HNO3 is limiting reactant (gets used up)
  • This means that Sr(OH)is in excess:
    • Sr(OH)→ Sr2+  + 2OH-
      • There will be excess OH-


Recall that:

  • [OH-] > [H+] → basic
  • [H+] > [OH-] → acidic
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Problem Details

A solution is made by mixing 15.0 g of Sr(OH)2 and 60.0 mL of 0.210 M HNO3.

You may want to reference (Pages 149 - 153) Section 4.6 while completing this problem.

Is the resultant solution acidic or basic?

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What scientific concept do you need to know in order to solve this problem?

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