
水の電離とpH
Quiz
•
Chemistry
•
9th Grade
•
Medium
0850Tachihara kenichi
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
酸性・塩基性の程度は,どのような数値で表されるのだろうか?
濃度
圧力
温度
pH
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水の電離によって生じる水素イオンのモル濃度(水素イオン濃度)を[H+]で表すと、純粋な水では25 ℃でどのようになるか?
1.0×10⁻⁹ mol/L
1.0×10⁻⁸ mol/L
1.0×10⁻⁶ mol/L
1.0×10⁻⁷ mol/L
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水溶液の酸性・塩基性は[H+]の大小だけで表すことができる。次のうち、酸性を示す条件はどれか?
[H+] < [OH-]
[H+] = [OH-]
[H+] > [OH-]
[OH-] > [H+]
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
酸性や塩基性の強弱を表すには、次のように簡単な数値で表されるpH(水素イオン指数)を用いる。pHが1増加すると、[H⁺]は何倍になるか?
1000倍
100倍
10000倍
10倍
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1価の酸の水素イオン濃度[H+]は、酸のモル濃度c〔mol/L〕に電離度αをかけると求められる。次のうち、正しい式はどれか?
[H⁺] = cα
[H⁺] = c+α
[H⁺] = c-α
[H⁺] = c/α
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
pHと[H+],[OH-]の関係(25 ℃)について、次のうち正しい組み合わせはどれか?
pH 0、[H+] 10⁻¹ mol/L、[OH⁻] 10⁻¹ mol/L
pH 7、[H+] 10⁻⁷ mol/L、[OH⁻] 10⁻⁷ mol/L
pH 14、[H+] 10⁻¹⁴ mol/L、[OH⁻] 10⁻¹⁴ mol/L
pH 13、[H+] 10⁻¹³ mol/L、[OH⁻] 10⁻¹³ mol/L
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
pHが3の水溶液とpHが6の水溶液がある。
酸性が強いのはどちらか
pH3
pH6
差はない
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
PH5の液体を水で1000倍に薄めるとPHはいくらになるか
2
8
7
6
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